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Added internal GdkRGBA support for GtkTextTag::paragraph-background-rgba

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Added the remaining implementation bits for rendering paragraph backgrounds
with rgba values and updated the test case.
This commit is contained in:
Tristan Van Berkom 2011-02-14 15:27:42 +09:00 committed by Matthias Clasen
parent 2b2d7aa305
commit cefb950110
5 changed files with 62 additions and 43 deletions
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8
gtk/gtktextattributes.c
View File

@ -279,11 +279,19 @@ _gtk_text_attributes_fill_from_tags (GtkTextAttributes *dest,
{
gdk_rgba_free (dest->pg_bg_rgba);
dest->pg_bg_rgba = NULL;
}
if (dest->pg_bg_color)
{
gdk_color_free (dest->pg_bg_color);
dest->pg_bg_color = NULL;
}
if (vals->pg_bg_rgba)
dest->pg_bg_rgba = gdk_rgba_copy (vals->pg_bg_rgba);
if (vals->pg_bg_color)
dest->pg_bg_color = gdk_color_copy (vals->pg_bg_color);
}
if (vals->font)

6
gtk/gtktextdisplay.c
View File

@ -649,13 +649,13 @@ render_para (GtkTextRenderer *text_renderer,
}
else
{
if (line_display->pg_bg_color)
if (line_display->pg_bg_rgba)
{
cairo_t *cr = text_renderer->cr;
cairo_save (cr);
gdk_cairo_set_source_color (cr, line_display->pg_bg_color);
gdk_cairo_set_source_rgba (text_renderer->cr, line_display->pg_bg_rgba);
cairo_rectangle (cr,
line_display->left_margin, selection_y,
screen_width, selection_height);

10
gtk/gtktextlayout.c
View File

@ -1408,7 +1408,12 @@ set_para_values (GtkTextLayout *layout,
if (style->pg_bg_color)
display->pg_bg_color = gdk_color_copy (style->pg_bg_color);
else
display->pg_bg_color = NULL;
display->pg_bg_color = NULL;
if (style->pg_bg_rgba)
display->pg_bg_rgba = gdk_rgba_copy (style->pg_bg_rgba);
else
display->pg_bg_rgba = NULL;
}
static PangoAttribute *
@ -2533,6 +2538,9 @@ gtk_text_layout_free_line_display (GtkTextLayout *layout,
if (display->pg_bg_color)
gdk_color_free (display->pg_bg_color);
if (display->pg_bg_rgba)
gdk_rgba_free (display->pg_bg_rgba);
g_free (display);
}
}

2
gtk/gtktextlayout.h
View File

@ -264,7 +264,7 @@ struct _GtkTextLineDisplay
guint cursor_at_line_end : 1;
guint size_only : 1;
gpointer padding1;
GdkRGBA *pg_bg_rgba;
};
#ifdef GTK_COMPILATION

79
tests/testtextview.c
View File

@ -23,6 +23,9 @@ create_tags (GtkTextBuffer *buffer)
gtk_text_buffer_create_tag (buffer, "semi_red_background",
"background", "rgba(255,0,0,0.5)", NULL);
gtk_text_buffer_create_tag (buffer, "semi_orange_paragraph_background",
"paragraph-background", "rgba(255,165,0,0.5)", NULL);
gtk_text_buffer_create_tag (buffer, "word_wrap",
"wrap_mode", GTK_WRAP_WORD, NULL);
}
@ -31,8 +34,9 @@ create_tags (GtkTextBuffer *buffer)
static void
insert_text (GtkTextBuffer *buffer)
{
GtkTextIter iter;
GtkTextIter start, end;
GtkTextIter iter;
GtkTextIter start, end;
GtkTextMark *para_start;
/* get start of buffer; each insertion will revalidate the
* iterator to point to just after the inserted text.
@ -59,35 +63,44 @@ insert_text (GtkTextBuffer *buffer)
"semi_red_background",
"x-large",
NULL);
gtk_text_buffer_insert (buffer, &iter, ".", -1);
gtk_text_buffer_insert (buffer, &iter, ".\n\n", -1);
/* Store the beginning of the other paragraph */
para_start = gtk_text_buffer_create_mark (buffer, "para_start", &iter, TRUE);
gtk_text_buffer_insert (buffer, &iter,
"Paragraph background colors can also be set with rgba color values .\n", -1);
gtk_text_buffer_insert (buffer, &iter, "For instance, you can have ", -1);
gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
"bold translucent blue text", -1,
"bold",
"semi_blue_foreground",
"x-large",
NULL);
gtk_text_buffer_insert (buffer, &iter, ", or ", -1);
gtk_text_buffer_insert (buffer, &iter, ", ", -1);
gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
"italic text with translucent red background", -1,
"italic",
"semi_red_background",
"x-large",
NULL);
gtk_text_buffer_insert (buffer, &iter, " all rendered onto a translucent orange paragraph background.\n", -1);
gtk_text_buffer_get_bounds (buffer, &start, &end);
gtk_text_buffer_get_iter_at_mark (buffer, &iter, para_start);
gtk_text_buffer_apply_tag_by_name (buffer, "semi_orange_paragraph_background", &iter, &end);
/* Apply word_wrap tag to whole buffer */
gtk_text_buffer_get_bounds (buffer, &start, &end);
gtk_text_buffer_apply_tag_by_name (buffer, "word_wrap", &start, &end);
}
static cairo_pattern_t *
get_pattern (void)
{
static cairo_pattern_t *static_pattern = NULL;
if (!static_pattern)
{
cairo_surface_t *surface =
cairo_image_surface_create_from_png ("gradient1.png");
if (surface)
{
static_pattern = cairo_pattern_create_for_surface (surface);
cairo_pattern_set_extend (static_pattern, CAIRO_EXTEND_REFLECT);
}
else
g_warning ("Failed to create surface for gradient1.png\n");
}
return static_pattern;
}
static void
draw_background (GtkWidget *widget, cairo_t *cr)
{
@ -98,26 +111,14 @@ draw_background (GtkWidget *widget, cairo_t *cr)
cairo_save (cr);
#if 0
pat = cairo_pattern_create_linear (0.0, 0.0, 30.0, 30.0);
pat = cairo_pattern_create_linear (0.0, 0.0, allocation.width, allocation.height);
cairo_pattern_add_color_stop_rgba (pat, 1, 0, 0, 0, 1);
cairo_pattern_add_color_stop_rgba (pat, 0, 1, 1, 1, 1);
cairo_pattern_set_extend (pat, CAIRO_EXTEND_REPEAT);
cairo_rectangle (cr, 0, 0, allocation.width, allocation.height);
cairo_set_source (cr, pat);
cairo_fill (cr);
cairo_pattern_destroy (pat);
#else
if (get_pattern ())
{
cairo_rectangle (cr, 0, 0, allocation.width, allocation.height);
cairo_set_source (cr, get_pattern ());
cairo_fill (cr);
}
#endif
cairo_restore (cr);
}
@ -133,6 +134,8 @@ main (int argc, char **argv)
textview = gtk_text_view_new ();
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (textview));
gtk_window_set_default_size (GTK_WINDOW (window), 400, -1);
create_tags (buffer);
insert_text (buffer);