extern Lisp_Object x_icon_type P_ ((struct frame *));
-/* Enumeration for overriding/changing the face to use for drawing
- glyphs in x_draw_glyphs. */
-
-enum draw_glyphs_face
-{
- DRAW_NORMAL_TEXT,
- DRAW_INVERSE_VIDEO,
- DRAW_CURSOR,
- DRAW_MOUSE_FACE,
- DRAW_IMAGE_RAISED,
- DRAW_IMAGE_SUNKEN
-};
-
static int cursor_in_mouse_face_p P_ ((struct window *));
static int clear_mouse_face P_ ((struct x_display_info *));
static int x_alloc_nearest_color_1 P_ ((Display *, Colormap, XColor *));
static void x_clip_to_row P_ ((struct window *, struct glyph_row *,
GC, int));
static int x_phys_cursor_in_rect_p P_ ((struct window *, XRectangle *));
-static void notice_overwritten_cursor P_ ((struct window *, enum glyph_row_area,
- int, int, int, int));
static void x_flush P_ ((struct frame *f));
static void x_update_begin P_ ((struct frame *));
static void x_update_window_begin P_ ((struct window *));
static void x_draw_vertical_border P_ ((struct window *));
static void x_after_update_window_line P_ ((struct glyph_row *));
static INLINE void take_vertical_position_into_account P_ ((struct it *));
-static void x_produce_stretch_glyph P_ ((struct it *));
static struct scroll_bar *x_window_to_scroll_bar P_ ((Window));
static void x_scroll_bar_report_motion P_ ((struct frame **, Lisp_Object *,
enum scroll_bar_part *,
/* Function prototypes of this page. */
-static struct face *x_get_glyph_face_and_encoding P_ ((struct frame *,
- struct glyph *,
- XChar2b *,
- int *));
-static struct face *x_get_char_face_and_encoding P_ ((struct frame *, int,
- int, XChar2b *, int,
- int));
-static XCharStruct *x_per_char_metric P_ ((XFontStruct *, XChar2b *));
-static void x_encode_char P_ ((int, XChar2b *, struct font_info *));
-static void x_append_glyph P_ ((struct it *));
-static void x_append_composite_glyph P_ ((struct it *));
-static void x_append_stretch_glyph P_ ((struct it *it, Lisp_Object,
- int, int, double));
-static void x_produce_glyphs P_ ((struct it *));
-static void x_produce_image_glyph P_ ((struct it *it));
+static int x_encode_char P_ ((int, XChar2b *, struct font_info *, int *));
/* Get metrics of character CHAR2B in FONT. Value is null if CHAR2B
is not contained in the font. */
-static INLINE XCharStruct *
-x_per_char_metric (font, char2b)
+static XCharStruct *
+x_per_char_metric (font, char2b, font_type)
XFontStruct *font;
XChar2b *char2b;
+ int font_type; /* unused on X */
{
/* The result metric information. */
XCharStruct *pcm = NULL;
/* Encode CHAR2B using encoding information from FONT_INFO. CHAR2B is
the two-byte form of C. Encoding is returned in *CHAR2B. */
-static INLINE void
-x_encode_char (c, char2b, font_info)
+static int
+x_encode_char (c, char2b, font_info, two_byte_p)
int c;
XChar2b *char2b;
struct font_info *font_info;
+ int *two_byte_p;
{
int charset = CHAR_CHARSET (c);
XFontStruct *font = font_info->font;
if (enc == 1 || enc == 3)
char2b->byte2 |= 0x80;
}
-}
-
-
-/* Get face and two-byte form of character C in face FACE_ID on frame
- F. The encoding of C is returned in *CHAR2B. MULTIBYTE_P non-zero
- means we want to display multibyte text. DISPLAY_P non-zero means
- make sure that X resources for the face returned are allocated.
- Value is a pointer to a realized face that is ready for display if
- DISPLAY_P is non-zero. */
-
-static INLINE struct face *
-x_get_char_face_and_encoding (f, c, face_id, char2b, multibyte_p, display_p)
- struct frame *f;
- int c, face_id;
- XChar2b *char2b;
- int multibyte_p, display_p;
-{
- struct face *face = FACE_FROM_ID (f, face_id);
-
- if (!multibyte_p)
- {
- /* Unibyte case. We don't have to encode, but we have to make
- sure to use a face suitable for unibyte. */
- char2b->byte1 = 0;
- char2b->byte2 = c;
- face_id = FACE_FOR_CHAR (f, face, c);
- face = FACE_FROM_ID (f, face_id);
- }
- else if (c < 128 && face_id < BASIC_FACE_ID_SENTINEL)
- {
- /* Case of ASCII in a face known to fit ASCII. */
- char2b->byte1 = 0;
- char2b->byte2 = c;
- }
- else
- {
- int c1, c2, charset;
-
- /* Split characters into bytes. If c2 is -1 afterwards, C is
- really a one-byte character so that byte1 is zero. */
- SPLIT_CHAR (c, charset, c1, c2);
- if (c2 > 0)
- char2b->byte1 = c1, char2b->byte2 = c2;
- else
- char2b->byte1 = 0, char2b->byte2 = c1;
-
- /* Maybe encode the character in *CHAR2B. */
- if (face->font != NULL)
- {
- struct font_info *font_info
- = FONT_INFO_FROM_ID (f, face->font_info_id);
- if (font_info)
- x_encode_char (c, char2b, font_info);
- }
- }
-
- /* Make sure X resources of the face are allocated. */
- if (display_p)
- {
- xassert (face != NULL);
- PREPARE_FACE_FOR_DISPLAY (f, face);
- }
-
- return face;
-}
-
-
-/* Get face and two-byte form of character glyph GLYPH on frame F.
- The encoding of GLYPH->u.ch is returned in *CHAR2B. Value is
- a pointer to a realized face that is ready for display. */
-
-static INLINE struct face *
-x_get_glyph_face_and_encoding (f, glyph, char2b, two_byte_p)
- struct frame *f;
- struct glyph *glyph;
- XChar2b *char2b;
- int *two_byte_p;
-{
- struct face *face;
-
- xassert (glyph->type == CHAR_GLYPH);
- face = FACE_FROM_ID (f, glyph->face_id);
if (two_byte_p)
- *two_byte_p = 0;
-
- if (!glyph->multibyte_p)
- {
- /* Unibyte case. We don't have to encode, but we have to make
- sure to use a face suitable for unibyte. */
- char2b->byte1 = 0;
- char2b->byte2 = glyph->u.ch;
- }
- else if (glyph->u.ch < 128
- && glyph->face_id < BASIC_FACE_ID_SENTINEL)
- {
- /* Case of ASCII in a face known to fit ASCII. */
- char2b->byte1 = 0;
- char2b->byte2 = glyph->u.ch;
- }
- else
- {
- int c1, c2, charset;
-
- /* Split characters into bytes. If c2 is -1 afterwards, C is
- really a one-byte character so that byte1 is zero. */
- SPLIT_CHAR (glyph->u.ch, charset, c1, c2);
- if (c2 > 0)
- char2b->byte1 = c1, char2b->byte2 = c2;
- else
- char2b->byte1 = 0, char2b->byte2 = c1;
-
- /* Maybe encode the character in *CHAR2B. */
- if (charset != CHARSET_ASCII)
- {
- struct font_info *font_info
- = FONT_INFO_FROM_ID (f, face->font_info_id);
- if (font_info)
- {
- x_encode_char (glyph->u.ch, char2b, font_info);
- if (two_byte_p)
- *two_byte_p
- = ((XFontStruct *) (font_info->font))->max_byte1 > 0;
- }
- }
- }
-
- /* Make sure X resources of the face are allocated. */
- xassert (face != NULL);
- PREPARE_FACE_FOR_DISPLAY (f, face);
- return face;
-}
-
-
-/* Store one glyph for IT->char_to_display in IT->glyph_row.
- Called from x_produce_glyphs when IT->glyph_row is non-null. */
-
-static INLINE void
-x_append_glyph (it)
- struct it *it;
-{
- struct glyph *glyph;
- enum glyph_row_area area = it->area;
-
- xassert (it->glyph_row);
- xassert (it->char_to_display != '\n' && it->char_to_display != '\t');
-
- glyph = it->glyph_row->glyphs[area] + it->glyph_row->used[area];
- if (glyph < it->glyph_row->glyphs[area + 1])
- {
- glyph->charpos = CHARPOS (it->position);
- glyph->object = it->object;
- glyph->pixel_width = it->pixel_width;
- glyph->voffset = it->voffset;
- glyph->type = CHAR_GLYPH;
- glyph->multibyte_p = it->multibyte_p;
- glyph->left_box_line_p = it->start_of_box_run_p;
- glyph->right_box_line_p = it->end_of_box_run_p;
- glyph->overlaps_vertically_p = (it->phys_ascent > it->ascent
- || it->phys_descent > it->descent);
- glyph->padding_p = 0;
- glyph->glyph_not_available_p = it->glyph_not_available_p;
- glyph->face_id = it->face_id;
- glyph->u.ch = it->char_to_display;
- ++it->glyph_row->used[area];
- }
-}
-
-/* Store one glyph for the composition IT->cmp_id in IT->glyph_row.
- Called from x_produce_glyphs when IT->glyph_row is non-null. */
-
-static INLINE void
-x_append_composite_glyph (it)
- struct it *it;
-{
- struct glyph *glyph;
- enum glyph_row_area area = it->area;
-
- xassert (it->glyph_row);
-
- glyph = it->glyph_row->glyphs[area] + it->glyph_row->used[area];
- if (glyph < it->glyph_row->glyphs[area + 1])
- {
- glyph->charpos = CHARPOS (it->position);
- glyph->object = it->object;
- glyph->pixel_width = it->pixel_width;
- glyph->voffset = it->voffset;
- glyph->type = COMPOSITE_GLYPH;
- glyph->multibyte_p = it->multibyte_p;
- glyph->left_box_line_p = it->start_of_box_run_p;
- glyph->right_box_line_p = it->end_of_box_run_p;
- glyph->overlaps_vertically_p = (it->phys_ascent > it->ascent
- || it->phys_descent > it->descent);
- glyph->padding_p = 0;
- glyph->glyph_not_available_p = 0;
- glyph->face_id = it->face_id;
- glyph->u.cmp_id = it->cmp_id;
- ++it->glyph_row->used[area];
- }
-}
-
-
-/* Change IT->ascent and IT->height according to the setting of
- IT->voffset. */
-
-static INLINE void
-take_vertical_position_into_account (it)
- struct it *it;
-{
- if (it->voffset)
- {
- if (it->voffset < 0)
- /* Increase the ascent so that we can display the text higher
- in the line. */
- it->ascent += abs (it->voffset);
- else
- /* Increase the descent so that we can display the text lower
- in the line. */
- it->descent += it->voffset;
- }
-}
-
-
-/* Produce glyphs/get display metrics for the image IT is loaded with.
- See the description of struct display_iterator in dispextern.h for
- an overview of struct display_iterator. */
-
-static void
-x_produce_image_glyph (it)
- struct it *it;
-{
- struct image *img;
- struct face *face;
-
- xassert (it->what == IT_IMAGE);
-
- face = FACE_FROM_ID (it->f, it->face_id);
- img = IMAGE_FROM_ID (it->f, it->image_id);
- xassert (img);
-
- /* Make sure X resources of the face and image are loaded. */
- PREPARE_FACE_FOR_DISPLAY (it->f, face);
- prepare_image_for_display (it->f, img);
-
- it->ascent = it->phys_ascent = image_ascent (img, face);
- it->descent = it->phys_descent = img->height + 2 * img->vmargin - it->ascent;
- it->pixel_width = img->width + 2 * img->hmargin;
-
- it->nglyphs = 1;
-
- if (face->box != FACE_NO_BOX)
- {
- if (face->box_line_width > 0)
- {
- it->ascent += face->box_line_width;
- it->descent += face->box_line_width;
- }
-
- if (it->start_of_box_run_p)
- it->pixel_width += abs (face->box_line_width);
- if (it->end_of_box_run_p)
- it->pixel_width += abs (face->box_line_width);
- }
-
- take_vertical_position_into_account (it);
-
- if (it->glyph_row)
- {
- struct glyph *glyph;
- enum glyph_row_area area = it->area;
-
- glyph = it->glyph_row->glyphs[area] + it->glyph_row->used[area];
- if (glyph < it->glyph_row->glyphs[area + 1])
- {
- glyph->charpos = CHARPOS (it->position);
- glyph->object = it->object;
- glyph->pixel_width = it->pixel_width;
- glyph->voffset = it->voffset;
- glyph->type = IMAGE_GLYPH;
- glyph->multibyte_p = it->multibyte_p;
- glyph->left_box_line_p = it->start_of_box_run_p;
- glyph->right_box_line_p = it->end_of_box_run_p;
- glyph->overlaps_vertically_p = 0;
- glyph->padding_p = 0;
- glyph->glyph_not_available_p = 0;
- glyph->face_id = it->face_id;
- glyph->u.img_id = img->id;
- ++it->glyph_row->used[area];
- }
- }
-}
-
-
-/* Append a stretch glyph to IT->glyph_row. OBJECT is the source
- of the glyph, WIDTH and HEIGHT are the width and height of the
- stretch. ASCENT is the percentage/100 of HEIGHT to use for the
- ascent of the glyph (0 <= ASCENT <= 1). */
-
-static void
-x_append_stretch_glyph (it, object, width, height, ascent)
- struct it *it;
- Lisp_Object object;
- int width, height;
- double ascent;
-{
- struct glyph *glyph;
- enum glyph_row_area area = it->area;
-
- xassert (ascent >= 0 && ascent <= 1);
-
- glyph = it->glyph_row->glyphs[area] + it->glyph_row->used[area];
- if (glyph < it->glyph_row->glyphs[area + 1])
- {
- glyph->charpos = CHARPOS (it->position);
- glyph->object = object;
- glyph->pixel_width = width;
- glyph->voffset = it->voffset;
- glyph->type = STRETCH_GLYPH;
- glyph->multibyte_p = it->multibyte_p;
- glyph->left_box_line_p = it->start_of_box_run_p;
- glyph->right_box_line_p = it->end_of_box_run_p;
- glyph->overlaps_vertically_p = 0;
- glyph->padding_p = 0;
- glyph->glyph_not_available_p = 0;
- glyph->face_id = it->face_id;
- glyph->u.stretch.ascent = height * ascent;
- glyph->u.stretch.height = height;
- ++it->glyph_row->used[area];
- }
-}
-
-
-/* Produce a stretch glyph for iterator IT. IT->object is the value
- of the glyph property displayed. The value must be a list
- `(space KEYWORD VALUE ...)' with the following KEYWORD/VALUE pairs
- being recognized:
-
- 1. `:width WIDTH' specifies that the space should be WIDTH *
- canonical char width wide. WIDTH may be an integer or floating
- point number.
-
- 2. `:relative-width FACTOR' specifies that the width of the stretch
- should be computed from the width of the first character having the
- `glyph' property, and should be FACTOR times that width.
-
- 3. `:align-to HPOS' specifies that the space should be wide enough
- to reach HPOS, a value in canonical character units.
-
- Exactly one of the above pairs must be present.
-
- 4. `:height HEIGHT' specifies that the height of the stretch produced
- should be HEIGHT, measured in canonical character units.
-
- 5. `:relative-height FACTOR' specifies that the height of the
- stretch should be FACTOR times the height of the characters having
- the glyph property.
-
- Either none or exactly one of 4 or 5 must be present.
-
- 6. `:ascent ASCENT' specifies that ASCENT percent of the height
- of the stretch should be used for the ascent of the stretch.
- ASCENT must be in the range 0 <= ASCENT <= 100. */
-
-#define NUMVAL(X) \
- ((INTEGERP (X) || FLOATP (X)) \
- ? XFLOATINT (X) \
- : - 1)
-
-
-static void
-x_produce_stretch_glyph (it)
- struct it *it;
-{
- /* (space :width WIDTH :height HEIGHT. */
-#if GLYPH_DEBUG
- extern Lisp_Object Qspace;
-#endif
- extern Lisp_Object QCwidth, QCheight, QCascent;
- extern Lisp_Object QCrelative_width, QCrelative_height;
- extern Lisp_Object QCalign_to;
- Lisp_Object prop, plist;
- double width = 0, height = 0, ascent = 0;
- struct face *face = FACE_FROM_ID (it->f, it->face_id);
- XFontStruct *font = face->font ? face->font : FRAME_FONT (it->f);
-
- PREPARE_FACE_FOR_DISPLAY (it->f, face);
-
- /* List should start with `space'. */
- xassert (CONSP (it->object) && EQ (XCAR (it->object), Qspace));
- plist = XCDR (it->object);
-
- /* Compute the width of the stretch. */
- if (prop = Fplist_get (plist, QCwidth),
- NUMVAL (prop) > 0)
- /* Absolute width `:width WIDTH' specified and valid. */
- width = NUMVAL (prop) * CANON_X_UNIT (it->f);
- else if (prop = Fplist_get (plist, QCrelative_width),
- NUMVAL (prop) > 0)
- {
- /* Relative width `:relative-width FACTOR' specified and valid.
- Compute the width of the characters having the `glyph'
- property. */
- struct it it2;
- unsigned char *p = BYTE_POS_ADDR (IT_BYTEPOS (*it));
-
- it2 = *it;
- if (it->multibyte_p)
- {
- int maxlen = ((IT_BYTEPOS (*it) >= GPT ? ZV : GPT)
- - IT_BYTEPOS (*it));
- it2.c = STRING_CHAR_AND_LENGTH (p, maxlen, it2.len);
- }
- else
- it2.c = *p, it2.len = 1;
-
- it2.glyph_row = NULL;
- it2.what = IT_CHARACTER;
- x_produce_glyphs (&it2);
- width = NUMVAL (prop) * it2.pixel_width;
- }
- else if (prop = Fplist_get (plist, QCalign_to),
- NUMVAL (prop) > 0)
- width = NUMVAL (prop) * CANON_X_UNIT (it->f) - it->current_x;
- else
- /* Nothing specified -> width defaults to canonical char width. */
- width = CANON_X_UNIT (it->f);
-
- /* Compute height. */
- if (prop = Fplist_get (plist, QCheight),
- NUMVAL (prop) > 0)
- height = NUMVAL (prop) * CANON_Y_UNIT (it->f);
- else if (prop = Fplist_get (plist, QCrelative_height),
- NUMVAL (prop) > 0)
- height = FONT_HEIGHT (font) * NUMVAL (prop);
- else
- height = FONT_HEIGHT (font);
-
- /* Compute percentage of height used for ascent. If
- `:ascent ASCENT' is present and valid, use that. Otherwise,
- derive the ascent from the font in use. */
- if (prop = Fplist_get (plist, QCascent),
- NUMVAL (prop) > 0 && NUMVAL (prop) <= 100)
- ascent = NUMVAL (prop) / 100.0;
- else
- ascent = (double) font->ascent / FONT_HEIGHT (font);
-
- if (width <= 0)
- width = 1;
- if (height <= 0)
- height = 1;
-
- if (it->glyph_row)
- {
- Lisp_Object object = it->stack[it->sp - 1].string;
- if (!STRINGP (object))
- object = it->w->buffer;
- x_append_stretch_glyph (it, object, width, height, ascent);
- }
-
- it->pixel_width = width;
- it->ascent = it->phys_ascent = height * ascent;
- it->descent = it->phys_descent = height - it->ascent;
- it->nglyphs = 1;
-
- if (face->box != FACE_NO_BOX)
- {
- if (face->box_line_width > 0)
- {
- it->ascent += face->box_line_width;
- it->descent += face->box_line_width;
- }
-
- if (it->start_of_box_run_p)
- it->pixel_width += abs (face->box_line_width);
- if (it->end_of_box_run_p)
- it->pixel_width += abs (face->box_line_width);
- }
-
- take_vertical_position_into_account (it);
-}
-
-/* Return proper value to be used as baseline offset of font that has
- ASCENT and DESCENT to draw characters by the font at the vertical
- center of the line of frame F.
-
- Here, out task is to find the value of BOFF in the following figure;
-
- -------------------------+-----------+-
- -+-+---------+-+ | |
- | | | | | |
- | | | | F_ASCENT F_HEIGHT
- | | | ASCENT | |
- HEIGHT | | | | |
- | | |-|-+------+-----------|------- baseline
- | | | | BOFF | |
- | |---------|-+-+ | |
- | | | DESCENT | |
- -+-+---------+-+ F_DESCENT |
- -------------------------+-----------+-
-
- -BOFF + DESCENT + (F_HEIGHT - HEIGHT) / 2 = F_DESCENT
- BOFF = DESCENT + (F_HEIGHT - HEIGHT) / 2 - F_DESCENT
- DESCENT = FONT->descent
- HEIGHT = FONT_HEIGHT (FONT)
- F_DESCENT = (F->output_data.x->font->descent
- - F->output_data.x->baseline_offset)
- F_HEIGHT = FRAME_LINE_HEIGHT (F)
-*/
-
-#define VCENTER_BASELINE_OFFSET(FONT, F) \
- ((FONT)->descent \
- + (FRAME_LINE_HEIGHT ((F)) - FONT_HEIGHT ((FONT)) \
- + (FRAME_LINE_HEIGHT ((F)) > FONT_HEIGHT ((FONT)))) / 2 \
- - ((F)->output_data.x->font->descent - (F)->output_data.x->baseline_offset))
-
-/* Produce glyphs/get display metrics for the display element IT is
- loaded with. See the description of struct display_iterator in
- dispextern.h for an overview of struct display_iterator. */
-
-static void
-x_produce_glyphs (it)
- struct it *it;
-{
- it->glyph_not_available_p = 0;
-
- if (it->what == IT_CHARACTER)
- {
- XChar2b char2b;
- XFontStruct *font;
- struct face *face = FACE_FROM_ID (it->f, it->face_id);
- XCharStruct *pcm;
- int font_not_found_p;
- struct font_info *font_info;
- int boff; /* baseline offset */
- /* We may change it->multibyte_p upon unibyte<->multibyte
- conversion. So, save the current value now and restore it
- later.
-
- Note: It seems that we don't have to record multibyte_p in
- struct glyph because the character code itself tells if or
- not the character is multibyte. Thus, in the future, we must
- consider eliminating the field `multibyte_p' in the struct
- glyph. */
- int saved_multibyte_p = it->multibyte_p;
-
- /* Maybe translate single-byte characters to multibyte, or the
- other way. */
- it->char_to_display = it->c;
- if (!ASCII_BYTE_P (it->c))
- {
- if (unibyte_display_via_language_environment
- && SINGLE_BYTE_CHAR_P (it->c)
- && (it->c >= 0240
- || !NILP (Vnonascii_translation_table)))
- {
- it->char_to_display = unibyte_char_to_multibyte (it->c);
- it->multibyte_p = 1;
- it->face_id = FACE_FOR_CHAR (it->f, face, it->char_to_display);
- face = FACE_FROM_ID (it->f, it->face_id);
- }
- else if (!SINGLE_BYTE_CHAR_P (it->c)
- && !it->multibyte_p)
- {
- it->multibyte_p = 1;
- it->face_id = FACE_FOR_CHAR (it->f, face, it->char_to_display);
- face = FACE_FROM_ID (it->f, it->face_id);
- }
- }
-
- /* Get font to use. Encode IT->char_to_display. */
- x_get_char_face_and_encoding (it->f, it->char_to_display,
- it->face_id, &char2b,
- it->multibyte_p, 0);
- font = face->font;
-
- /* When no suitable font found, use the default font. */
- font_not_found_p = font == NULL;
- if (font_not_found_p)
- {
- font = FRAME_FONT (it->f);
- boff = it->f->output_data.x->baseline_offset;
- font_info = NULL;
- }
- else
- {
- font_info = FONT_INFO_FROM_ID (it->f, face->font_info_id);
- boff = font_info->baseline_offset;
- if (font_info->vertical_centering)
- boff = VCENTER_BASELINE_OFFSET (font, it->f) - boff;
- }
-
- if (it->char_to_display >= ' '
- && (!it->multibyte_p || it->char_to_display < 128))
- {
- /* Either unibyte or ASCII. */
- int stretched_p;
-
- it->nglyphs = 1;
-
- pcm = x_per_char_metric (font, &char2b);
- it->ascent = font->ascent + boff;
- it->descent = font->descent - boff;
-
- if (pcm)
- {
- it->phys_ascent = pcm->ascent + boff;
- it->phys_descent = pcm->descent - boff;
- it->pixel_width = pcm->width;
- }
- else
- {
- it->glyph_not_available_p = 1;
- it->phys_ascent = font->ascent + boff;
- it->phys_descent = font->descent - boff;
- it->pixel_width = FONT_WIDTH (font);
- }
-
- /* If this is a space inside a region of text with
- `space-width' property, change its width. */
- stretched_p = it->char_to_display == ' ' && !NILP (it->space_width);
- if (stretched_p)
- it->pixel_width *= XFLOATINT (it->space_width);
-
- /* If face has a box, add the box thickness to the character
- height. If character has a box line to the left and/or
- right, add the box line width to the character's width. */
- if (face->box != FACE_NO_BOX)
- {
- int thick = face->box_line_width;
-
- if (thick > 0)
- {
- it->ascent += thick;
- it->descent += thick;
- }
- else
- thick = -thick;
-
- if (it->start_of_box_run_p)
- it->pixel_width += thick;
- if (it->end_of_box_run_p)
- it->pixel_width += thick;
- }
-
- /* If face has an overline, add the height of the overline
- (1 pixel) and a 1 pixel margin to the character height. */
- if (face->overline_p)
- it->ascent += 2;
-
- take_vertical_position_into_account (it);
-
- /* If we have to actually produce glyphs, do it. */
- if (it->glyph_row)
- {
- if (stretched_p)
- {
- /* Translate a space with a `space-width' property
- into a stretch glyph. */
- double ascent = (double) font->ascent / FONT_HEIGHT (font);
- x_append_stretch_glyph (it, it->object, it->pixel_width,
- it->ascent + it->descent, ascent);
- }
- else
- x_append_glyph (it);
-
- /* If characters with lbearing or rbearing are displayed
- in this line, record that fact in a flag of the
- glyph row. This is used to optimize X output code. */
- if (pcm && (pcm->lbearing < 0 || pcm->rbearing > pcm->width))
- it->glyph_row->contains_overlapping_glyphs_p = 1;
- }
- }
- else if (it->char_to_display == '\n')
- {
- /* A newline has no width but we need the height of the line. */
- it->pixel_width = 0;
- it->nglyphs = 0;
- it->ascent = it->phys_ascent = font->ascent + boff;
- it->descent = it->phys_descent = font->descent - boff;
-
- if (face->box != FACE_NO_BOX
- && face->box_line_width > 0)
- {
- it->ascent += face->box_line_width;
- it->descent += face->box_line_width;
- }
- }
- else if (it->char_to_display == '\t')
- {
- int tab_width = it->tab_width * CANON_X_UNIT (it->f);
- int x = it->current_x + it->continuation_lines_width;
- int next_tab_x = ((1 + x + tab_width - 1) / tab_width) * tab_width;
-
- /* If the distance from the current position to the next tab
- stop is less than a canonical character width, use the
- tab stop after that. */
- if (next_tab_x - x < CANON_X_UNIT (it->f))
- next_tab_x += tab_width;
-
- it->pixel_width = next_tab_x - x;
- it->nglyphs = 1;
- it->ascent = it->phys_ascent = font->ascent + boff;
- it->descent = it->phys_descent = font->descent - boff;
-
- if (it->glyph_row)
- {
- double ascent = (double) it->ascent / (it->ascent + it->descent);
- x_append_stretch_glyph (it, it->object, it->pixel_width,
- it->ascent + it->descent, ascent);
- }
- }
- else
- {
- /* A multi-byte character. Assume that the display width of the
- character is the width of the character multiplied by the
- width of the font. */
-
- /* If we found a font, this font should give us the right
- metrics. If we didn't find a font, use the frame's
- default font and calculate the width of the character
- from the charset width; this is what old redisplay code
- did. */
- pcm = x_per_char_metric (font, &char2b);
- if (font_not_found_p || !pcm)
- {
- int charset = CHAR_CHARSET (it->char_to_display);
-
- it->glyph_not_available_p = 1;
- it->pixel_width = (FONT_WIDTH (FRAME_FONT (it->f))
- * CHARSET_WIDTH (charset));
- it->phys_ascent = font->ascent + boff;
- it->phys_descent = font->descent - boff;
- }
- else
- {
- it->pixel_width = pcm->width;
- it->phys_ascent = pcm->ascent + boff;
- it->phys_descent = pcm->descent - boff;
- if (it->glyph_row
- && (pcm->lbearing < 0
- || pcm->rbearing > pcm->width))
- it->glyph_row->contains_overlapping_glyphs_p = 1;
- }
- it->nglyphs = 1;
- it->ascent = font->ascent + boff;
- it->descent = font->descent - boff;
- if (face->box != FACE_NO_BOX)
- {
- int thick = face->box_line_width;
-
- if (thick > 0)
- {
- it->ascent += thick;
- it->descent += thick;
- }
- else
- thick = - thick;
-
- if (it->start_of_box_run_p)
- it->pixel_width += thick;
- if (it->end_of_box_run_p)
- it->pixel_width += thick;
- }
-
- /* If face has an overline, add the height of the overline
- (1 pixel) and a 1 pixel margin to the character height. */
- if (face->overline_p)
- it->ascent += 2;
-
- take_vertical_position_into_account (it);
-
- if (it->glyph_row)
- x_append_glyph (it);
- }
- it->multibyte_p = saved_multibyte_p;
- }
- else if (it->what == IT_COMPOSITION)
- {
- /* Note: A composition is represented as one glyph in the
- glyph matrix. There are no padding glyphs. */
- XChar2b char2b;
- XFontStruct *font;
- struct face *face = FACE_FROM_ID (it->f, it->face_id);
- XCharStruct *pcm;
- int font_not_found_p;
- struct font_info *font_info;
- int boff; /* baseline offset */
- struct composition *cmp = composition_table[it->cmp_id];
-
- /* Maybe translate single-byte characters to multibyte. */
- it->char_to_display = it->c;
- if (unibyte_display_via_language_environment
- && SINGLE_BYTE_CHAR_P (it->c)
- && (it->c >= 0240
- || (it->c >= 0200
- && !NILP (Vnonascii_translation_table))))
- {
- it->char_to_display = unibyte_char_to_multibyte (it->c);
- }
-
- /* Get face and font to use. Encode IT->char_to_display. */
- it->face_id = FACE_FOR_CHAR (it->f, face, it->char_to_display);
- face = FACE_FROM_ID (it->f, it->face_id);
- x_get_char_face_and_encoding (it->f, it->char_to_display,
- it->face_id, &char2b, it->multibyte_p, 0);
- font = face->font;
-
- /* When no suitable font found, use the default font. */
- font_not_found_p = font == NULL;
- if (font_not_found_p)
- {
- font = FRAME_FONT (it->f);
- boff = it->f->output_data.x->baseline_offset;
- font_info = NULL;
- }
- else
- {
- font_info = FONT_INFO_FROM_ID (it->f, face->font_info_id);
- boff = font_info->baseline_offset;
- if (font_info->vertical_centering)
- boff = VCENTER_BASELINE_OFFSET (font, it->f) - boff;
- }
-
- /* There are no padding glyphs, so there is only one glyph to
- produce for the composition. Important is that pixel_width,
- ascent and descent are the values of what is drawn by
- draw_glyphs (i.e. the values of the overall glyphs composed). */
- it->nglyphs = 1;
-
- /* If we have not yet calculated pixel size data of glyphs of
- the composition for the current face font, calculate them
- now. Theoretically, we have to check all fonts for the
- glyphs, but that requires much time and memory space. So,
- here we check only the font of the first glyph. This leads
- to incorrect display very rarely, and C-l (recenter) can
- correct the display anyway. */
- if (cmp->font != (void *) font)
- {
- /* Ascent and descent of the font of the first character of
- this composition (adjusted by baseline offset). Ascent
- and descent of overall glyphs should not be less than
- them respectively. */
- int font_ascent = font->ascent + boff;
- int font_descent = font->descent - boff;
- /* Bounding box of the overall glyphs. */
- int leftmost, rightmost, lowest, highest;
- int i, width, ascent, descent;
-
- cmp->font = (void *) font;
-
- /* Initialize the bounding box. */
- if (font_info
- && (pcm = x_per_char_metric (font, &char2b)))
- {
- width = pcm->width;
- ascent = pcm->ascent;
- descent = pcm->descent;
- }
- else
- {
- width = FONT_WIDTH (font);
- ascent = font->ascent;
- descent = font->descent;
- }
-
- rightmost = width;
- lowest = - descent + boff;
- highest = ascent + boff;
- leftmost = 0;
-
- if (font_info
- && font_info->default_ascent
- && CHAR_TABLE_P (Vuse_default_ascent)
- && !NILP (Faref (Vuse_default_ascent,
- make_number (it->char_to_display))))
- highest = font_info->default_ascent + boff;
-
- /* Draw the first glyph at the normal position. It may be
- shifted to right later if some other glyphs are drawn at
- the left. */
- cmp->offsets[0] = 0;
- cmp->offsets[1] = boff;
-
- /* Set cmp->offsets for the remaining glyphs. */
- for (i = 1; i < cmp->glyph_len; i++)
- {
- int left, right, btm, top;
- int ch = COMPOSITION_GLYPH (cmp, i);
- int face_id = FACE_FOR_CHAR (it->f, face, ch);
-
- face = FACE_FROM_ID (it->f, face_id);
- x_get_char_face_and_encoding (it->f, ch, face->id, &char2b,
- it->multibyte_p, 0);
- font = face->font;
- if (font == NULL)
- {
- font = FRAME_FONT (it->f);
- boff = it->f->output_data.x->baseline_offset;
- font_info = NULL;
- }
- else
- {
- font_info
- = FONT_INFO_FROM_ID (it->f, face->font_info_id);
- boff = font_info->baseline_offset;
- if (font_info->vertical_centering)
- boff = VCENTER_BASELINE_OFFSET (font, it->f) - boff;
- }
-
- if (font_info
- && (pcm = x_per_char_metric (font, &char2b)))
- {
- width = pcm->width;
- ascent = pcm->ascent;
- descent = pcm->descent;
- }
- else
- {
- width = FONT_WIDTH (font);
- ascent = 1;
- descent = 0;
- }
-
- if (cmp->method != COMPOSITION_WITH_RULE_ALTCHARS)
- {
- /* Relative composition with or without
- alternate chars. */
- left = (leftmost + rightmost - width) / 2;
- btm = - descent + boff;
- if (font_info && font_info->relative_compose
- && (! CHAR_TABLE_P (Vignore_relative_composition)
- || NILP (Faref (Vignore_relative_composition,
- make_number (ch)))))
- {
-
- if (- descent >= font_info->relative_compose)
- /* One extra pixel between two glyphs. */
- btm = highest + 1;
- else if (ascent <= 0)
- /* One extra pixel between two glyphs. */
- btm = lowest - 1 - ascent - descent;
- }
- }
- else
- {
- /* A composition rule is specified by an integer
- value that encodes global and new reference
- points (GREF and NREF). GREF and NREF are
- specified by numbers as below:
-
- 0---1---2 -- ascent
- | |
- | |
- | |
- 9--10--11 -- center
- | |
- ---3---4---5--- baseline
- | |
- 6---7---8 -- descent
- */
- int rule = COMPOSITION_RULE (cmp, i);
- int gref, nref, grefx, grefy, nrefx, nrefy;
-
- COMPOSITION_DECODE_RULE (rule, gref, nref);
- grefx = gref % 3, nrefx = nref % 3;
- grefy = gref / 3, nrefy = nref / 3;
-
- left = (leftmost
- + grefx * (rightmost - leftmost) / 2
- - nrefx * width / 2);
- btm = ((grefy == 0 ? highest
- : grefy == 1 ? 0
- : grefy == 2 ? lowest
- : (highest + lowest) / 2)
- - (nrefy == 0 ? ascent + descent
- : nrefy == 1 ? descent - boff
- : nrefy == 2 ? 0
- : (ascent + descent) / 2));
- }
-
- cmp->offsets[i * 2] = left;
- cmp->offsets[i * 2 + 1] = btm + descent;
-
- /* Update the bounding box of the overall glyphs. */
- right = left + width;
- top = btm + descent + ascent;
- if (left < leftmost)
- leftmost = left;
- if (right > rightmost)
- rightmost = right;
- if (top > highest)
- highest = top;
- if (btm < lowest)
- lowest = btm;
- }
-
- /* If there are glyphs whose x-offsets are negative,
- shift all glyphs to the right and make all x-offsets
- non-negative. */
- if (leftmost < 0)
- {
- for (i = 0; i < cmp->glyph_len; i++)
- cmp->offsets[i * 2] -= leftmost;
- rightmost -= leftmost;
- }
-
- cmp->pixel_width = rightmost;
- cmp->ascent = highest;
- cmp->descent = - lowest;
- if (cmp->ascent < font_ascent)
- cmp->ascent = font_ascent;
- if (cmp->descent < font_descent)
- cmp->descent = font_descent;
- }
+ *two_byte_p = ((XFontStruct *) (font_info->font))->max_byte1 > 0;
- it->pixel_width = cmp->pixel_width;
- it->ascent = it->phys_ascent = cmp->ascent;
- it->descent = it->phys_descent = cmp->descent;
-
- if (face->box != FACE_NO_BOX)
- {
- int thick = face->box_line_width;
-
- if (thick > 0)
- {
- it->ascent += thick;
- it->descent += thick;
- }
- else
- thick = - thick;
-
- if (it->start_of_box_run_p)
- it->pixel_width += thick;
- if (it->end_of_box_run_p)
- it->pixel_width += thick;
- }
-
- /* If face has an overline, add the height of the overline
- (1 pixel) and a 1 pixel margin to the character height. */
- if (face->overline_p)
- it->ascent += 2;
-
- take_vertical_position_into_account (it);
-
- if (it->glyph_row)
- x_append_composite_glyph (it);
- }
- else if (it->what == IT_IMAGE)
- x_produce_image_glyph (it);
- else if (it->what == IT_STRETCH)
- x_produce_stretch_glyph (it);
-
- /* Accumulate dimensions. Note: can't assume that it->descent > 0
- because this isn't true for images with `:ascent 100'. */
- xassert (it->ascent >= 0 && it->descent >= 0);
- if (it->area == TEXT_AREA)
- it->current_x += it->pixel_width;
-
- it->descent += it->extra_line_spacing;
-
- it->max_ascent = max (it->max_ascent, it->ascent);
- it->max_descent = max (it->max_descent, it->descent);
- it->max_phys_ascent = max (it->max_phys_ascent, it->phys_ascent);
- it->max_phys_descent = max (it->max_phys_descent, it->phys_descent);
+ return FONT_TYPE_UNKNOWN;
}
Glyph display
***********************************************************************/
-/* A sequence of glyphs to be drawn in the same face.
-
- This data structure is not really completely X specific, so it
- could possibly, at least partially, be useful for other systems. It
- is currently not part of the external redisplay interface because
- it's not clear what other systems will need. */
-
-struct glyph_string
-{
- /* X-origin of the string. */
- int x;
-
- /* Y-origin and y-position of the base line of this string. */
- int y, ybase;
-
- /* The width of the string, not including a face extension. */
- int width;
-
- /* The width of the string, including a face extension. */
- int background_width;
-
- /* The height of this string. This is the height of the line this
- string is drawn in, and can be different from the height of the
- font the string is drawn in. */
- int height;
-
- /* Number of pixels this string overwrites in front of its x-origin.
- This number is zero if the string has an lbearing >= 0; it is
- -lbearing, if the string has an lbearing < 0. */
- int left_overhang;
-
- /* Number of pixels this string overwrites past its right-most
- nominal x-position, i.e. x + width. Zero if the string's
- rbearing is <= its nominal width, rbearing - width otherwise. */
- int right_overhang;
-
- /* The frame on which the glyph string is drawn. */
- struct frame *f;
-
- /* The window on which the glyph string is drawn. */
- struct window *w;
-
- /* X display and window for convenience. */
- Display *display;
- Window window;
-
- /* The glyph row for which this string was built. It determines the
- y-origin and height of the string. */
- struct glyph_row *row;
-
- /* The area within row. */
- enum glyph_row_area area;
-
- /* Characters to be drawn, and number of characters. */
- XChar2b *char2b;
- int nchars;
-
- /* A face-override for drawing cursors, mouse face and similar. */
- enum draw_glyphs_face hl;
-
- /* Face in which this string is to be drawn. */
- struct face *face;
-
- /* Font in which this string is to be drawn. */
- XFontStruct *font;
-
- /* Font info for this string. */
- struct font_info *font_info;
-
- /* Non-null means this string describes (part of) a composition.
- All characters from char2b are drawn composed. */
- struct composition *cmp;
-
- /* Index of this glyph string's first character in the glyph
- definition of CMP. If this is zero, this glyph string describes
- the first character of a composition. */
- int gidx;
-
- /* 1 means this glyph strings face has to be drawn to the right end
- of the window's drawing area. */
- unsigned extends_to_end_of_line_p : 1;
- /* 1 means the background of this string has been drawn. */
- unsigned background_filled_p : 1;
- /* 1 means glyph string must be drawn with 16-bit functions. */
- unsigned two_byte_p : 1;
-
- /* 1 means that the original font determined for drawing this glyph
- string could not be loaded. The member `font' has been set to
- the frame's default font in this case. */
- unsigned font_not_found_p : 1;
-
- /* 1 means that the face in which this glyph string is drawn has a
- stipple pattern. */
- unsigned stippled_p : 1;
-
- /* 1 means only the foreground of this glyph string must be drawn,
- and we should use the physical height of the line this glyph
- string appears in as clip rect. */
- unsigned for_overlaps_p : 1;
-
- /* The GC to use for drawing this glyph string. */
- GC gc;
-
- /* A pointer to the first glyph in the string. This glyph
- corresponds to char2b[0]. Needed to draw rectangles if
- font_not_found_p is 1. */
- struct glyph *first_glyph;
-
- /* Image, if any. */
- struct image *img;
-
- struct glyph_string *next, *prev;
-};
-
-
-#if GLYPH_DEBUG
-
-static void
-x_dump_glyph_string (s)
- struct glyph_string *s;
-{
- fprintf (stderr, "glyph string\n");
- fprintf (stderr, " x, y, w, h = %d, %d, %d, %d\n",
- s->x, s->y, s->width, s->height);
- fprintf (stderr, " ybase = %d\n", s->ybase);
- fprintf (stderr, " hl = %d\n", s->hl);
- fprintf (stderr, " left overhang = %d, right = %d\n",
- s->left_overhang, s->right_overhang);
- fprintf (stderr, " nchars = %d\n", s->nchars);
- fprintf (stderr, " extends to end of line = %d\n",
- s->extends_to_end_of_line_p);
- fprintf (stderr, " font height = %d\n", FONT_HEIGHT (s->font));
- fprintf (stderr, " bg width = %d\n", s->background_width);
-}
-
-#endif /* GLYPH_DEBUG */
-
-
-
-static void x_append_glyph_string_lists P_ ((struct glyph_string **,
- struct glyph_string **,
- struct glyph_string *,
- struct glyph_string *));
-static void x_prepend_glyph_string_lists P_ ((struct glyph_string **,
- struct glyph_string **,
- struct glyph_string *,
- struct glyph_string *));
-static void x_append_glyph_string P_ ((struct glyph_string **,
- struct glyph_string **,
- struct glyph_string *));
-static int x_left_overwritten P_ ((struct glyph_string *));
-static int x_left_overwriting P_ ((struct glyph_string *));
-static int x_right_overwritten P_ ((struct glyph_string *));
-static int x_right_overwriting P_ ((struct glyph_string *));
-static int x_fill_glyph_string P_ ((struct glyph_string *, int, int, int,
- int));
-static void x_init_glyph_string P_ ((struct glyph_string *,
- XChar2b *, struct window *,
- struct glyph_row *,
- enum glyph_row_area, int,
- enum draw_glyphs_face));
-static int x_draw_glyphs P_ ((struct window *, int , struct glyph_row *,
- enum glyph_row_area, int, int,
- enum draw_glyphs_face, int));
static void x_set_glyph_string_clipping P_ ((struct glyph_string *));
static void x_set_glyph_string_gc P_ ((struct glyph_string *));
static void x_draw_glyph_string_background P_ ((struct glyph_string *,
static void x_set_cursor_gc P_ ((struct glyph_string *));
static void x_set_mode_line_face_gc P_ ((struct glyph_string *));
static void x_set_mouse_face_gc P_ ((struct glyph_string *));
-static void x_get_glyph_overhangs P_ ((struct glyph *, struct frame *,
- int *, int *));
-static void x_compute_overhangs_and_x P_ ((struct glyph_string *, int, int));
static int x_alloc_lighter_color P_ ((struct frame *, Display *, Colormap,
unsigned long *, double, int));
static void x_setup_relief_color P_ ((struct frame *, struct relief *,
static void x_draw_image_relief P_ ((struct glyph_string *));
static void x_draw_image_foreground P_ ((struct glyph_string *));
static void x_draw_image_foreground_1 P_ ((struct glyph_string *, Pixmap));
-static void x_fill_image_glyph_string P_ ((struct glyph_string *));
static void x_clear_glyph_string_rect P_ ((struct glyph_string *, int,
int, int, int));
static void x_draw_relief_rect P_ ((struct frame *, int, int, int, int,
static void x_draw_box_rect P_ ((struct glyph_string *, int, int, int, int,
int, int, int, XRectangle *));
static void x_fix_overlapping_area P_ ((struct window *, struct glyph_row *,
- enum glyph_row_area));
-static int x_fill_stretch_glyph_string P_ ((struct glyph_string *,
- struct glyph_row *,
- enum glyph_row_area, int, int));
-
-#if GLYPH_DEBUG
-static void x_check_font P_ ((struct frame *, XFontStruct *));
-#endif
-
-
-/* Append the list of glyph strings with head H and tail T to the list
- with head *HEAD and tail *TAIL. Set *HEAD and *TAIL to the result. */
-
-static INLINE void
-x_append_glyph_string_lists (head, tail, h, t)
- struct glyph_string **head, **tail;
- struct glyph_string *h, *t;
-{
- if (h)
- {
- if (*head)
- (*tail)->next = h;
- else
- *head = h;
- h->prev = *tail;
- *tail = t;
- }
-}
-
-
-/* Prepend the list of glyph strings with head H and tail T to the
- list with head *HEAD and tail *TAIL. Set *HEAD and *TAIL to the
- result. */
-
-static INLINE void
-x_prepend_glyph_string_lists (head, tail, h, t)
- struct glyph_string **head, **tail;
- struct glyph_string *h, *t;
-{
- if (h)
- {
- if (*head)
- (*head)->prev = t;
- else
- *tail = t;
- t->next = *head;
- *head = h;
- }
-}
-
-
-/* Append glyph string S to the list with head *HEAD and tail *TAIL.
- Set *HEAD and *TAIL to the resulting list. */
-
-static INLINE void
-x_append_glyph_string (head, tail, s)
- struct glyph_string **head, **tail;
- struct glyph_string *s;
-{
- s->next = s->prev = NULL;
- x_append_glyph_string_lists (head, tail, s, s);
-}
+ enum glyph_row_area));
+
+#if GLYPH_DEBUG
+static void x_check_font P_ ((struct frame *, XFontStruct *));
+#endif
/* Set S->gc to a suitable GC for drawing glyph string S in cursor
}
-/* Compute left and right overhang of glyph string S. If S is a glyph
+/* RIF:
+ Compute left and right overhang of glyph string S. If S is a glyph
string for a composition, assume overhangs don't exist. */
-static INLINE void
+static void
x_compute_glyph_string_overhangs (s)
struct glyph_string *s;
{
}
-/* Compute overhangs and x-positions for glyph string S and its
- predecessors, or successors. X is the starting x-position for S.
- BACKWARD_P non-zero means process predecessors. */
-
-static void
-x_compute_overhangs_and_x (s, x, backward_p)
- struct glyph_string *s;
- int x;
- int backward_p;
-{
- if (backward_p)
- {
- while (s)
- {
- x_compute_glyph_string_overhangs (s);
- x -= s->width;
- s->x = x;
- s = s->prev;
- }
- }
- else
- {
- while (s)
- {
- x_compute_glyph_string_overhangs (s);
- s->x = x;
- x += s->width;
- s = s->next;
- }
- }
-}
-
-
-/* Set *LEFT and *RIGHT to the left and right overhang of GLYPH on
- frame F. Overhangs of glyphs other than type CHAR_GLYPH are
- assumed to be zero. */
-
-static void
-x_get_glyph_overhangs (glyph, f, left, right)
- struct glyph *glyph;
- struct frame *f;
- int *left, *right;
-{
- *left = *right = 0;
-
- if (glyph->type == CHAR_GLYPH)
- {
- XFontStruct *font;
- struct face *face;
- struct font_info *font_info;
- XChar2b char2b;
- XCharStruct *pcm;
-
- face = x_get_glyph_face_and_encoding (f, glyph, &char2b, NULL);
- font = face->font;
- font_info = FONT_INFO_FROM_ID (f, face->font_info_id);
- if (font
- && (pcm = x_per_char_metric (font, &char2b)))
- {
- if (pcm->rbearing > pcm->width)
- *right = pcm->rbearing - pcm->width;
- if (pcm->lbearing < 0)
- *left = -pcm->lbearing;
- }
- }
-}
-
-
-/* Return the index of the first glyph preceding glyph string S that
- is overwritten by S because of S's left overhang. Value is -1
- if no glyphs are overwritten. */
-
-static int
-x_left_overwritten (s)
- struct glyph_string *s;
-{
- int k;
-
- if (s->left_overhang)
- {
- int x = 0, i;
- struct glyph *glyphs = s->row->glyphs[s->area];
- int first = s->first_glyph - glyphs;
-
- for (i = first - 1; i >= 0 && x > -s->left_overhang; --i)
- x -= glyphs[i].pixel_width;
-
- k = i + 1;
- }
- else
- k = -1;
-
- return k;
-}
-
-
-/* Return the index of the first glyph preceding glyph string S that
- is overwriting S because of its right overhang. Value is -1 if no
- glyph in front of S overwrites S. */
-
-static int
-x_left_overwriting (s)
- struct glyph_string *s;
-{
- int i, k, x;
- struct glyph *glyphs = s->row->glyphs[s->area];
- int first = s->first_glyph - glyphs;
-
- k = -1;
- x = 0;
- for (i = first - 1; i >= 0; --i)
- {
- int left, right;
- x_get_glyph_overhangs (glyphs + i, s->f, &left, &right);
- if (x + right > 0)
- k = i;
- x -= glyphs[i].pixel_width;
- }
-
- return k;
-}
-
-
-/* Return the index of the last glyph following glyph string S that is
- not overwritten by S because of S's right overhang. Value is -1 if
- no such glyph is found. */
-
-static int
-x_right_overwritten (s)
- struct glyph_string *s;
-{
- int k = -1;
-
- if (s->right_overhang)
- {
- int x = 0, i;
- struct glyph *glyphs = s->row->glyphs[s->area];
- int first = (s->first_glyph - glyphs) + (s->cmp ? 1 : s->nchars);
- int end = s->row->used[s->area];
-
- for (i = first; i < end && s->right_overhang > x; ++i)
- x += glyphs[i].pixel_width;
-
- k = i;
- }
-
- return k;
-}
-
-
-/* Return the index of the last glyph following glyph string S that
- overwrites S because of its left overhang. Value is negative
- if no such glyph is found. */
-
-static int
-x_right_overwriting (s)
- struct glyph_string *s;
-{
- int i, k, x;
- int end = s->row->used[s->area];
- struct glyph *glyphs = s->row->glyphs[s->area];
- int first = (s->first_glyph - glyphs) + (s->cmp ? 1 : s->nchars);
-
- k = -1;
- x = 0;
- for (i = first; i < end; ++i)
- {
- int left, right;
- x_get_glyph_overhangs (glyphs + i, s->f, &left, &right);
- if (x - left < 0)
- k = i;
- x += glyphs[i].pixel_width;
- }
-
- return k;
-}
-
-
/* Fill rectangle X, Y, W, H with background color of glyph string S. */
static INLINE void
}
-static int x_fill_composite_glyph_string P_ ((struct glyph_string *,
- struct face **, int));
-
-
-/* Fill glyph string S with composition components specified by S->cmp.
-
- FACES is an array of faces for all components of this composition.
- S->gidx is the index of the first component for S.
- OVERLAPS_P non-zero means S should draw the foreground only, and
- use its physical height for clipping.
-
- Value is the index of a component not in S. */
-
-static int
-x_fill_composite_glyph_string (s, faces, overlaps_p)
- struct glyph_string *s;
- struct face **faces;
- int overlaps_p;
-{
- int i;
-
- xassert (s);
-
- s->for_overlaps_p = overlaps_p;
-
- s->face = faces[s->gidx];
- s->font = s->face->font;
- s->font_info = FONT_INFO_FROM_ID (s->f, s->face->font_info_id);
-
- /* For all glyphs of this composition, starting at the offset
- S->gidx, until we reach the end of the definition or encounter a
- glyph that requires the different face, add it to S. */
- ++s->nchars;
- for (i = s->gidx + 1; i < s->cmp->glyph_len && faces[i] == s->face; ++i)
- ++s->nchars;
-
- /* All glyph strings for the same composition has the same width,
- i.e. the width set for the first component of the composition. */
-
- s->width = s->first_glyph->pixel_width;
-
- /* If the specified font could not be loaded, use the frame's
- default font, but record the fact that we couldn't load it in
- the glyph string so that we can draw rectangles for the
- characters of the glyph string. */
- if (s->font == NULL)
- {
- s->font_not_found_p = 1;
- s->font = FRAME_FONT (s->f);
- }
-
- /* Adjust base line for subscript/superscript text. */
- s->ybase += s->first_glyph->voffset;
-
- xassert (s->face && s->face->gc);
-
- /* This glyph string must always be drawn with 16-bit functions. */
- s->two_byte_p = 1;
-
- return s->gidx + s->nchars;
-}
-
-
-/* Fill glyph string S from a sequence of character glyphs.
-
- FACE_ID is the face id of the string. START is the index of the
- first glyph to consider, END is the index of the last + 1.
- OVERLAPS_P non-zero means S should draw the foreground only, and
- use its physical height for clipping.
-
- Value is the index of the first glyph not in S. */
-
-static int
-x_fill_glyph_string (s, face_id, start, end, overlaps_p)
- struct glyph_string *s;
- int face_id;
- int start, end, overlaps_p;
-{
- struct glyph *glyph, *last;
- int voffset;
- int glyph_not_available_p;
-
- xassert (s->f == XFRAME (s->w->frame));
- xassert (s->nchars == 0);
- xassert (start >= 0 && end > start);
-
- s->for_overlaps_p = overlaps_p,
- glyph = s->row->glyphs[s->area] + start;
- last = s->row->glyphs[s->area] + end;
- voffset = glyph->voffset;
-
- glyph_not_available_p = glyph->glyph_not_available_p;
-
- while (glyph < last
- && glyph->type == CHAR_GLYPH
- && glyph->voffset == voffset
- /* Same face id implies same font, nowadays. */
- && glyph->face_id == face_id
- && glyph->glyph_not_available_p == glyph_not_available_p)
- {
- int two_byte_p;
-
- s->face = x_get_glyph_face_and_encoding (s->f, glyph,
- s->char2b + s->nchars,
- &two_byte_p);
- s->two_byte_p = two_byte_p;
- ++s->nchars;
- xassert (s->nchars <= end - start);
- s->width += glyph->pixel_width;
- ++glyph;
- }
-
- s->font = s->face->font;
- s->font_info = FONT_INFO_FROM_ID (s->f, s->face->font_info_id);
-
- /* If the specified font could not be loaded, use the frame's font,
- but record the fact that we couldn't load it in
- S->font_not_found_p so that we can draw rectangles for the
- characters of the glyph string. */
- if (s->font == NULL || glyph_not_available_p)
- {
- s->font_not_found_p = 1;
- s->font = FRAME_FONT (s->f);
- }
-
- /* Adjust base line for subscript/superscript text. */
- s->ybase += voffset;
-
- xassert (s->face && s->face->gc);
- return glyph - s->row->glyphs[s->area];
-}
-
-
-/* Fill glyph string S from image glyph S->first_glyph. */
-
-static void
-x_fill_image_glyph_string (s)
- struct glyph_string *s;
-{
- xassert (s->first_glyph->type == IMAGE_GLYPH);
- s->img = IMAGE_FROM_ID (s->f, s->first_glyph->u.img_id);
- xassert (s->img);
- s->face = FACE_FROM_ID (s->f, s->first_glyph->face_id);
- s->font = s->face->font;
- s->width = s->first_glyph->pixel_width;
-
- /* Adjust base line for subscript/superscript text. */
- s->ybase += s->first_glyph->voffset;
-}
-
-
-/* Fill glyph string S from a sequence of stretch glyphs.
-
- ROW is the glyph row in which the glyphs are found, AREA is the
- area within the row. START is the index of the first glyph to
- consider, END is the index of the last + 1.
-
- Value is the index of the first glyph not in S. */
-
-static int
-x_fill_stretch_glyph_string (s, row, area, start, end)
- struct glyph_string *s;
- struct glyph_row *row;
- enum glyph_row_area area;
- int start, end;
-{
- struct glyph *glyph, *last;
- int voffset, face_id;
-
- xassert (s->first_glyph->type == STRETCH_GLYPH);
-
- glyph = s->row->glyphs[s->area] + start;
- last = s->row->glyphs[s->area] + end;
- face_id = glyph->face_id;
- s->face = FACE_FROM_ID (s->f, face_id);
- s->font = s->face->font;
- s->font_info = FONT_INFO_FROM_ID (s->f, s->face->font_info_id);
- s->width = glyph->pixel_width;
- voffset = glyph->voffset;
-
- for (++glyph;
- (glyph < last
- && glyph->type == STRETCH_GLYPH
- && glyph->voffset == voffset
- && glyph->face_id == face_id);
- ++glyph)
- s->width += glyph->pixel_width;
-
- /* Adjust base line for subscript/superscript text. */
- s->ybase += voffset;
-
- /* The case that face->gc == 0 is handled when drawing the glyph
- string by calling PREPARE_FACE_FOR_DISPLAY. */
- xassert (s->face);
- return glyph - s->row->glyphs[s->area];
-}
-
-
-/* Initialize glyph string S. CHAR2B is a suitably allocated vector
- of XChar2b structures for S; it can't be allocated in
- x_init_glyph_string because it must be allocated via `alloca'. W
- is the window on which S is drawn. ROW and AREA are the glyph row
- and area within the row from which S is constructed. START is the
- index of the first glyph structure covered by S. HL is a
- face-override for drawing S. */
-
-static void
-x_init_glyph_string (s, char2b, w, row, area, start, hl)
- struct glyph_string *s;
- XChar2b *char2b;
- struct window *w;
- struct glyph_row *row;
- enum glyph_row_area area;
- int start;
- enum draw_glyphs_face hl;
-{
- bzero (s, sizeof *s);
- s->w = w;
- s->f = XFRAME (w->frame);
- s->display = FRAME_X_DISPLAY (s->f);
- s->window = FRAME_X_WINDOW (s->f);
- s->char2b = char2b;
- s->hl = hl;
- s->row = row;
- s->area = area;
- s->first_glyph = row->glyphs[area] + start;
- s->height = row->height;
- s->y = WINDOW_TO_FRAME_PIXEL_Y (w, row->y);
-
- /* Display the internal border below the tool-bar window. */
- if (s->w == XWINDOW (s->f->tool_bar_window))
- s->y -= s->f->output_data.x->internal_border_width;
-
- s->ybase = s->y + row->ascent;
-}
-
-
-/* Set background width of glyph string S. START is the index of the
- first glyph following S. LAST_X is the right-most x-position + 1
- in the drawing area. */
-
-static INLINE void
-x_set_glyph_string_background_width (s, start, last_x)
- struct glyph_string *s;
- int start;
- int last_x;
-{
- /* If the face of this glyph string has to be drawn to the end of
- the drawing area, set S->extends_to_end_of_line_p. */
- struct face *default_face = FACE_FROM_ID (s->f, DEFAULT_FACE_ID);
-
- if (start == s->row->used[s->area]
- && s->area == TEXT_AREA
- && ((s->hl == DRAW_NORMAL_TEXT
- && (s->row->fill_line_p
- || s->face->background != default_face->background
- || s->face->stipple != default_face->stipple
- || s->row->mouse_face_p))
- || s->hl == DRAW_MOUSE_FACE
- || ((s->hl == DRAW_IMAGE_RAISED || s->hl == DRAW_IMAGE_SUNKEN)
- && s->row->fill_line_p)))
- s->extends_to_end_of_line_p = 1;
-
- /* If S extends its face to the end of the line, set its
- background_width to the distance to the right edge of the drawing
- area. */
- if (s->extends_to_end_of_line_p)
- s->background_width = last_x - s->x + 1;
- else
- s->background_width = s->width;
-}
-
-
-/* Add a glyph string for a stretch glyph to the list of strings
- between HEAD and TAIL. START is the index of the stretch glyph in
- row area AREA of glyph row ROW. END is the index of the last glyph
- in that glyph row area. X is the current output position assigned
- to the new glyph string constructed. HL overrides that face of the
- glyph; e.g. it is DRAW_CURSOR if a cursor has to be drawn. LAST_X
- is the right-most x-position of the drawing area. */
-
-/* SunOS 4 bundled cc, barfed on continuations in the arg lists here
- and below -- keep them on one line. */
-#define BUILD_STRETCH_GLYPH_STRING(W, ROW, AREA, START, END, HEAD, TAIL, HL, X, LAST_X) \
- do \
- { \
- s = (struct glyph_string *) alloca (sizeof *s); \
- x_init_glyph_string (s, NULL, W, ROW, AREA, START, HL); \
- START = x_fill_stretch_glyph_string (s, ROW, AREA, START, END); \
- x_append_glyph_string (&HEAD, &TAIL, s); \
- s->x = (X); \
- } \
- while (0)
-
-
-/* Add a glyph string for an image glyph to the list of strings
- between HEAD and TAIL. START is the index of the image glyph in
- row area AREA of glyph row ROW. END is the index of the last glyph
- in that glyph row area. X is the current output position assigned
- to the new glyph string constructed. HL overrides that face of the
- glyph; e.g. it is DRAW_CURSOR if a cursor has to be drawn. LAST_X
- is the right-most x-position of the drawing area. */
-
-#define BUILD_IMAGE_GLYPH_STRING(W, ROW, AREA, START, END, HEAD, TAIL, HL, X, LAST_X) \
- do \
- { \
- s = (struct glyph_string *) alloca (sizeof *s); \
- x_init_glyph_string (s, NULL, W, ROW, AREA, START, HL); \
- x_fill_image_glyph_string (s); \
- x_append_glyph_string (&HEAD, &TAIL, s); \
- ++START; \
- s->x = (X); \
- } \
- while (0)
-
-
-/* Add a glyph string for a sequence of character glyphs to the list
- of strings between HEAD and TAIL. START is the index of the first
- glyph in row area AREA of glyph row ROW that is part of the new
- glyph string. END is the index of the last glyph in that glyph row
- area. X is the current output position assigned to the new glyph
- string constructed. HL overrides that face of the glyph; e.g. it
- is DRAW_CURSOR if a cursor has to be drawn. LAST_X is the
- right-most x-position of the drawing area. */
-
-#define BUILD_CHAR_GLYPH_STRINGS(W, ROW, AREA, START, END, HEAD, TAIL, HL, X, LAST_X, OVERLAPS_P) \
- do \
- { \
- int c, face_id; \
- XChar2b *char2b; \
- \
- c = (ROW)->glyphs[AREA][START].u.ch; \
- face_id = (ROW)->glyphs[AREA][START].face_id; \
- \
- s = (struct glyph_string *) alloca (sizeof *s); \
- char2b = (XChar2b *) alloca ((END - START) * sizeof *char2b); \
- x_init_glyph_string (s, char2b, W, ROW, AREA, START, HL); \
- x_append_glyph_string (&HEAD, &TAIL, s); \
- s->x = (X); \
- START = x_fill_glyph_string (s, face_id, START, END, \
- OVERLAPS_P); \
- } \
- while (0)
-
-
-/* Add a glyph string for a composite sequence to the list of strings
- between HEAD and TAIL. START is the index of the first glyph in
- row area AREA of glyph row ROW that is part of the new glyph
- string. END is the index of the last glyph in that glyph row area.
- X is the current output position assigned to the new glyph string
- constructed. HL overrides that face of the glyph; e.g. it is
- DRAW_CURSOR if a cursor has to be drawn. LAST_X is the right-most
- x-position of the drawing area. */
-
-#define BUILD_COMPOSITE_GLYPH_STRING(W, ROW, AREA, START, END, HEAD, TAIL, HL, X, LAST_X, OVERLAPS_P) \
- do { \
- int cmp_id = (ROW)->glyphs[AREA][START].u.cmp_id; \
- int face_id = (ROW)->glyphs[AREA][START].face_id; \
- struct face *base_face = FACE_FROM_ID (XFRAME (w->frame), face_id); \
- struct composition *cmp = composition_table[cmp_id]; \
- int glyph_len = cmp->glyph_len; \
- XChar2b *char2b; \
- struct face **faces; \
- struct glyph_string *first_s = NULL; \
- int n; \
- \
- base_face = base_face->ascii_face; \
- char2b = (XChar2b *) alloca ((sizeof *char2b) * glyph_len); \
- faces = (struct face **) alloca ((sizeof *faces) * glyph_len); \
- /* At first, fill in `char2b' and `faces'. */ \
- for (n = 0; n < glyph_len; n++) \
- { \
- int c = COMPOSITION_GLYPH (cmp, n); \
- int this_face_id = FACE_FOR_CHAR (XFRAME (w->frame), base_face, c); \
- faces[n] = FACE_FROM_ID (XFRAME (w->frame), this_face_id); \
- x_get_char_face_and_encoding (XFRAME (w->frame), c, \
- this_face_id, char2b + n, 1, 1); \
- } \
- \
- /* Make glyph_strings for each glyph sequence that is drawable by \
- the same face, and append them to HEAD/TAIL. */ \
- for (n = 0; n < cmp->glyph_len;) \
- { \
- s = (struct glyph_string *) alloca (sizeof *s); \
- x_init_glyph_string (s, char2b + n, W, ROW, AREA, START, HL); \
- x_append_glyph_string (&(HEAD), &(TAIL), s); \
- s->cmp = cmp; \
- s->gidx = n; \
- s->x = (X); \
- \
- if (n == 0) \
- first_s = s; \
- \
- n = x_fill_composite_glyph_string (s, faces, OVERLAPS_P); \
- } \
- \
- ++START; \
- s = first_s; \
- } while (0)
-
-
-/* Build a list of glyph strings between HEAD and TAIL for the glyphs
- of AREA of glyph row ROW on window W between indices START and END.
- HL overrides the face for drawing glyph strings, e.g. it is
- DRAW_CURSOR to draw a cursor. X and LAST_X are start and end
- x-positions of the drawing area.
-
- This is an ugly monster macro construct because we must use alloca
- to allocate glyph strings (because x_draw_glyphs can be called
- asynchronously). */
-
-#define BUILD_GLYPH_STRINGS(W, ROW, AREA, START, END, HEAD, TAIL, HL, X, LAST_X, OVERLAPS_P) \
- do \
- { \
- HEAD = TAIL = NULL; \
- while (START < END) \
- { \
- struct glyph *first_glyph = (ROW)->glyphs[AREA] + START; \
- switch (first_glyph->type) \
- { \
- case CHAR_GLYPH: \
- BUILD_CHAR_GLYPH_STRINGS (W, ROW, AREA, START, END, HEAD, \
- TAIL, HL, X, LAST_X, \
- OVERLAPS_P); \
- break; \
- \
- case COMPOSITE_GLYPH: \
- BUILD_COMPOSITE_GLYPH_STRING (W, ROW, AREA, START, END, \
- HEAD, TAIL, HL, X, LAST_X,\
- OVERLAPS_P); \
- break; \
- \
- case STRETCH_GLYPH: \
- BUILD_STRETCH_GLYPH_STRING (W, ROW, AREA, START, END, \
- HEAD, TAIL, HL, X, LAST_X); \
- break; \
- \
- case IMAGE_GLYPH: \
- BUILD_IMAGE_GLYPH_STRING (W, ROW, AREA, START, END, HEAD, \
- TAIL, HL, X, LAST_X); \
- break; \
- \
- default: \
- abort (); \
- } \
- \
- x_set_glyph_string_background_width (s, START, LAST_X); \
- (X) += s->width; \
- } \
- } \
- while (0)
-
-
-/* Draw glyphs between START and END in AREA of ROW on window W,
- starting at x-position X. X is relative to AREA in W. HL is a
- face-override with the following meaning:
-
- DRAW_NORMAL_TEXT draw normally
- DRAW_CURSOR draw in cursor face
- DRAW_MOUSE_FACE draw in mouse face.
- DRAW_INVERSE_VIDEO draw in mode line face
- DRAW_IMAGE_SUNKEN draw an image with a sunken relief around it
- DRAW_IMAGE_RAISED draw an image with a raised relief around it
-
- If OVERLAPS_P is non-zero, draw only the foreground of characters
- and clip to the physical height of ROW.
-
- Value is the x-position reached, relative to AREA of W. */
-
-static int
-x_draw_glyphs (w, x, row, area, start, end, hl, overlaps_p)
- struct window *w;
- int x;
- struct glyph_row *row;
- enum glyph_row_area area;
- int start, end;
- enum draw_glyphs_face hl;
- int overlaps_p;
-{
- struct glyph_string *head, *tail;
- struct glyph_string *s;
- int last_x, area_width;
- int x_reached;
- int i, j;
-
- /* Let's rather be paranoid than getting a SEGV. */
- end = min (end, row->used[area]);
- start = max (0, start);
- start = min (end, start);
-
- /* Translate X to frame coordinates. Set last_x to the right
- end of the drawing area. */
- if (row->full_width_p)
- {
- /* X is relative to the left edge of W, without scroll bars
- or fringes. */
- struct frame *f = XFRAME (w->frame);
- int window_left_x = WINDOW_LEFT_MARGIN (w) * CANON_X_UNIT (f);
-
- x += window_left_x;
- area_width = XFASTINT (w->width) * CANON_X_UNIT (f);
- last_x = window_left_x + area_width;
-
- if (FRAME_HAS_VERTICAL_SCROLL_BARS (f))
- {
- int width = FRAME_SCROLL_BAR_WIDTH (f) * CANON_X_UNIT (f);
- if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT (f))
- last_x += width;
- else
- x -= width;
- }
-
- x += FRAME_INTERNAL_BORDER_WIDTH (f);
- last_x += FRAME_INTERNAL_BORDER_WIDTH (f);
- }
- else
- {
- x = WINDOW_AREA_TO_FRAME_PIXEL_X (w, area, x);
- area_width = window_box_width (w, area);
- last_x = WINDOW_AREA_TO_FRAME_PIXEL_X (w, area, area_width);
- }
-
- /* Build a doubly-linked list of glyph_string structures between
- head and tail from what we have to draw. Note that the macro
- BUILD_GLYPH_STRINGS will modify its start parameter. That's
- the reason we use a separate variable `i'. */
- i = start;
- BUILD_GLYPH_STRINGS (w, row, area, i, end, head, tail, hl, x, last_x,
- overlaps_p);
- if (tail)
- x_reached = tail->x + tail->background_width;
- else
- x_reached = x;
-
- /* If there are any glyphs with lbearing < 0 or rbearing > width in
- the row, redraw some glyphs in front or following the glyph
- strings built above. */
- if (head && !overlaps_p && row->contains_overlapping_glyphs_p)
- {
- int dummy_x = 0;
- struct glyph_string *h, *t;
-
- /* Compute overhangs for all glyph strings. */
- for (s = head; s; s = s->next)
- x_compute_glyph_string_overhangs (s);
-
- /* Prepend glyph strings for glyphs in front of the first glyph
- string that are overwritten because of the first glyph
- string's left overhang. The background of all strings
- prepended must be drawn because the first glyph string
- draws over it. */
- i = x_left_overwritten (head);
- if (i >= 0)
- {
- j = i;
- BUILD_GLYPH_STRINGS (w, row, area, j, start, h, t,
- DRAW_NORMAL_TEXT, dummy_x, last_x,
- overlaps_p);
- start = i;
- x_compute_overhangs_and_x (t, head->x, 1);
- x_prepend_glyph_string_lists (&head, &tail, h, t);
- }
-
- /* Prepend glyph strings for glyphs in front of the first glyph
- string that overwrite that glyph string because of their
- right overhang. For these strings, only the foreground must
- be drawn, because it draws over the glyph string at `head'.
- The background must not be drawn because this would overwrite
- right overhangs of preceding glyphs for which no glyph
- strings exist. */
- i = x_left_overwriting (head);
- if (i >= 0)
- {
- BUILD_GLYPH_STRINGS (w, row, area, i, start, h, t,
- DRAW_NORMAL_TEXT, dummy_x, last_x,
- overlaps_p);
- for (s = h; s; s = s->next)
- s->background_filled_p = 1;
- x_compute_overhangs_and_x (t, head->x, 1);
- x_prepend_glyph_string_lists (&head, &tail, h, t);
- }
-
- /* Append glyphs strings for glyphs following the last glyph
- string tail that are overwritten by tail. The background of
- these strings has to be drawn because tail's foreground draws
- over it. */
- i = x_right_overwritten (tail);
- if (i >= 0)
- {
- BUILD_GLYPH_STRINGS (w, row, area, end, i, h, t,
- DRAW_NORMAL_TEXT, x, last_x,
- overlaps_p);
- x_compute_overhangs_and_x (h, tail->x + tail->width, 0);
- x_append_glyph_string_lists (&head, &tail, h, t);
- }
-
- /* Append glyph strings for glyphs following the last glyph
- string tail that overwrite tail. The foreground of such
- glyphs has to be drawn because it writes into the background
- of tail. The background must not be drawn because it could
- paint over the foreground of following glyphs. */
- i = x_right_overwriting (tail);
- if (i >= 0)
- {
- BUILD_GLYPH_STRINGS (w, row, area, end, i, h, t,
- DRAW_NORMAL_TEXT, x, last_x,
- overlaps_p);
- for (s = h; s; s = s->next)
- s->background_filled_p = 1;
- x_compute_overhangs_and_x (h, tail->x + tail->width, 0);
- x_append_glyph_string_lists (&head, &tail, h, t);
- }
- }
-
- /* Draw all strings. */
- for (s = head; s; s = s->next)
- x_draw_glyph_string (s);
-
- if (area == TEXT_AREA
- && !row->full_width_p
- /* When drawing overlapping rows, only the glyph strings'
- foreground is drawn, which doesn't erase a cursor
- completely. */
- && !overlaps_p)
- {
- int x0 = head ? head->x : x;
- int x1 = tail ? tail->x + tail->background_width : x;
-
- x0 = FRAME_TO_WINDOW_PIXEL_X (w, x0);
- x1 = FRAME_TO_WINDOW_PIXEL_X (w, x1);
-
- if (XFASTINT (w->left_margin_width) != 0)
- {
- int left_area_width = window_box_width (w, LEFT_MARGIN_AREA);
- x0 -= left_area_width;
- x1 -= left_area_width;
- }
-
- notice_overwritten_cursor (w, area, x0, x1,
- row->y, MATRIX_ROW_BOTTOM_Y (row));
- }
-
- /* Value is the x-position up to which drawn, relative to AREA of W.
- This doesn't include parts drawn because of overhangs. */
- x_reached = FRAME_TO_WINDOW_PIXEL_X (w, x_reached);
- if (!row->full_width_p)
- {
- if (area > LEFT_MARGIN_AREA && XFASTINT (w->left_margin_width) != 0)
- x_reached -= window_box_width (w, LEFT_MARGIN_AREA);
- if (area > TEXT_AREA)
- x_reached -= window_box_width (w, TEXT_AREA);
- }
-
- return x_reached;
-}
-
-
/* Fix the display of area AREA of overlapping row ROW in window W. */
static void
Text Cursor
***********************************************************************/
-/* Notice when the text cursor of window W has been completely
- overwritten by a drawing operation that outputs glyphs in AREA
- starting at X0 and ending at X1 in the line starting at Y0 and
- ending at Y1. X coordinates are area-relative. X1 < 0 means all
- the rest of the line after X0 has been written. Y coordinates
- are window-relative. */
-
-static void
-notice_overwritten_cursor (w, area, x0, x1, y0, y1)
- struct window *w;
- enum glyph_row_area area;
- int x0, y0, x1, y1;
-{
- if (area == TEXT_AREA && w->phys_cursor_on_p)
- {
- int cx0 = w->phys_cursor.x;
- int cx1 = cx0 + w->phys_cursor_width;
- int cy0 = w->phys_cursor.y;
- int cy1 = cy0 + w->phys_cursor_height;
-
- if (x0 <= cx0 && (x1 < 0 || x1 >= cx1))
- {
- /* The cursor image will be completely removed from the
- screen if the output area intersects the cursor area in
- y-direction. When we draw in [y0 y1[, and some part of
- the cursor is at y < y0, that part must have been drawn
- before. When scrolling, the cursor is erased before
- actually scrolling, so we don't come here. When not
- scrolling, the rows above the old cursor row must have
- changed, and in this case these rows must have written
- over the cursor image.
-
- Likewise if part of the cursor is below y1, with the
- exception of the cursor being in the first blank row at
- the buffer and window end because update_text_area
- doesn't draw that row. (Except when it does, but
- that's handled in update_text_area.) */
-
- if (((y0 >= cy0 && y0 < cy1) || (y1 > cy0 && y1 < cy1))
- && w->current_matrix->rows[w->phys_cursor.vpos].displays_text_p)
- w->phys_cursor_on_p = 0;
- }
- }
-}
-
-
/* Set clipping for output in glyph row ROW. W is the window in which
we operate. GC is the graphics context to set clipping in.
WHOLE_LINE_P non-zero means include the areas used for truncation
x_clear_mouse_face,
x_get_glyph_overhangs,
x_fix_overlapping_area,
- x_draw_fringe_bitmap
+ x_draw_fringe_bitmap,
+ x_per_char_metric,
+ x_encode_char,
+ x_compute_glyph_string_overhangs,
+ x_draw_glyph_string
};
void
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