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Port GtkTextDisplay to StyleContext.

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Use the new StyleContext and StateFlags to draw the text

https://bugzilla.gnome.org/show_bug.cgi?id=639105
This commit is contained in:
Paolo Borelli 2011-01-09 22:42:06 +01:00
parent 845d864a51
commit 2290ec6bd8
1 changed files with 118 additions and 63 deletions
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181
gtk/gtktextdisplay.c
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@ -118,22 +118,6 @@ struct _GtkTextRendererClass
G_DEFINE_TYPE (GtkTextRenderer, _gtk_text_renderer, PANGO_TYPE_RENDERER)
static GdkColor *
text_renderer_get_error_color (GtkTextRenderer *text_renderer)
{
static const GdkColor red = { 0, 0xffff, 0, 0 };
if (!text_renderer->error_color)
gtk_widget_style_get (text_renderer->widget,
"error-underline-color", &text_renderer->error_color,
NULL);
if (!text_renderer->error_color)
text_renderer->error_color = gdk_color_copy (&red);
return text_renderer->error_color;
}
static void
text_renderer_set_gdk_color (GtkTextRenderer *text_renderer,
PangoRenderPart part,
@ -153,7 +137,27 @@ text_renderer_set_gdk_color (GtkTextRenderer *text_renderer,
}
else
pango_renderer_set_color (renderer, part, NULL);
}
static void
text_renderer_set_rgba (GtkTextRenderer *text_renderer,
PangoRenderPart part,
GdkRGBA *rgba)
{
PangoRenderer *renderer = PANGO_RENDERER (text_renderer);
if (rgba)
{
PangoColor color;
color.red = CLAMP (rgba->red * 65535. + 0.5, 0, 65535);
color.green = CLAMP (rgba->green * 65535. + 0.5, 0, 65535);
color.blue = CLAMP (rgba->blue * 65535. + 0.5, 0, 65535);
pango_renderer_set_color (renderer, part, &color);
}
else
pango_renderer_set_color (renderer, part, NULL);
}
static GtkTextAppearance *
@ -178,9 +182,12 @@ static void
gtk_text_renderer_prepare_run (PangoRenderer *renderer,
PangoLayoutRun *run)
{
GtkStyleContext *context;
GtkStateFlags state;
GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
GtkStyle *style;
GdkColor *bg_color, *fg_color, *underline_color;
GdkColor *bg_color = NULL;
GdkRGBA *fg_rgba = NULL;
GdkColor *fg_color = NULL;
GtkTextAppearance *appearance;
PANGO_RENDERER_CLASS (_gtk_text_renderer_parent_class)->prepare_run (renderer, run);
@ -188,6 +195,10 @@ gtk_text_renderer_prepare_run (PangoRenderer *renderer,
appearance = get_item_appearance (run->item);
g_assert (appearance != NULL);
context = gtk_widget_get_style_context (text_renderer->widget);
state = gtk_widget_get_state_flags (text_renderer->widget);
if (appearance->draw_bg && text_renderer->state == NORMAL)
bg_color = &appearance->bg_color;
else
@ -195,28 +206,58 @@ gtk_text_renderer_prepare_run (PangoRenderer *renderer,
text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_BACKGROUND, bg_color);
style = gtk_widget_get_style (text_renderer->widget);
if (text_renderer->state == SELECTED)
{
state |= GTK_STATE_FLAG_SELECTED;
if (gtk_widget_has_focus (text_renderer->widget))
fg_color = &style->text[GTK_STATE_SELECTED];
else
fg_color = &style->text[GTK_STATE_ACTIVE];
state |= GTK_STATE_FLAG_FOCUSED;
gtk_style_context_get (context, state,
"color", &fg_rgba,
NULL);
}
else if (text_renderer->state == CURSOR && gtk_widget_has_focus (text_renderer->widget))
fg_color = &style->base[GTK_STATE_NORMAL];
{
gtk_style_context_get (context, state,
"background-color", &fg_rgba,
NULL);
}
else
fg_color = &appearance->fg_color;
text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_FOREGROUND, fg_color);
text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_STRIKETHROUGH, fg_color);
if (fg_rgba)
{
text_renderer_set_rgba (text_renderer, PANGO_RENDER_PART_FOREGROUND, fg_rgba);
text_renderer_set_rgba (text_renderer, PANGO_RENDER_PART_STRIKETHROUGH,fg_rgba);
}
else
{
text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_FOREGROUND, fg_color);
text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_STRIKETHROUGH, fg_color);
}
if (appearance->underline == PANGO_UNDERLINE_ERROR)
underline_color = text_renderer_get_error_color (text_renderer);
else
underline_color = fg_color;
{
if (!text_renderer->error_color)
{
gtk_style_context_get_style (context,
"error-underline-color", &text_renderer->error_color,
NULL);
text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_UNDERLINE, underline_color);
if (!text_renderer->error_color)
{
static const GdkColor red = { 0, 0xffff, 0, 0 };
text_renderer->error_color = gdk_color_copy (&red);
}
}
text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_UNDERLINE, text_renderer->error_color);
}
else if (fg_rgba)
text_renderer_set_rgba (text_renderer, PANGO_RENDER_PART_UNDERLINE, fg_rgba);
else
text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_UNDERLINE, fg_color);
}
static void
@ -458,8 +499,24 @@ text_renderer_begin (GtkTextRenderer *text_renderer,
GtkWidget *widget,
cairo_t *cr)
{
GtkStyleContext *context;
GtkStateFlags state;
GdkRGBA color;
text_renderer->widget = widget;
text_renderer->cr = cr;
context = gtk_widget_get_style_context (widget);
gtk_style_context_save (context);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_get_color (context, state, &color);
cairo_save (cr);
gdk_cairo_set_source_rgba (cr, &color);
}
/* Returns a GSList of (referenced) widgets encountered while drawing.
@ -467,8 +524,15 @@ text_renderer_begin (GtkTextRenderer *text_renderer,
static GList *
text_renderer_end (GtkTextRenderer *text_renderer)
{
GtkStyleContext *context;
GList *widgets = text_renderer->widgets;
cairo_restore (text_renderer->cr);
context = gtk_widget_get_style_context (text_renderer->widget);
gtk_style_context_restore (context);
text_renderer->widget = NULL;
text_renderer->cr = NULL;
@ -483,7 +547,6 @@ text_renderer_end (GtkTextRenderer *text_renderer)
return widgets;
}
static cairo_region_t *
get_selected_clip (GtkTextRenderer *text_renderer,
PangoLayout *layout,
@ -525,18 +588,16 @@ render_para (GtkTextRenderer *text_renderer,
int selection_start_index,
int selection_end_index)
{
GtkStyle *style;
GtkStyleContext *context;
GtkStateFlags state;
PangoLayout *layout = line_display->layout;
int byte_offset = 0;
PangoLayoutIter *iter;
PangoRectangle layout_logical;
int screen_width;
GdkColor *selection;
gint state;
GdkRGBA selection;
gboolean first = TRUE;
style = gtk_widget_get_style (text_renderer->widget);
iter = pango_layout_get_iter (layout);
pango_layout_iter_get_layout_extents (iter, NULL, &layout_logical);
@ -547,13 +608,14 @@ render_para (GtkTextRenderer *text_renderer,
layout_logical.y += line_display->top_margin * PANGO_SCALE;
screen_width = line_display->total_width;
if (gtk_widget_has_focus (text_renderer->widget))
state = GTK_STATE_SELECTED;
else
state = GTK_STATE_ACTIVE;
selection = &style->base [state];
context = gtk_widget_get_style_context (text_renderer->widget);
state = GTK_STATE_FLAG_SELECTED;
if (gtk_widget_has_focus (text_renderer->widget))
state |= GTK_STATE_FLAG_FOCUSED;
gtk_style_context_get_background_color (context, state, &selection);
do
{
@ -598,7 +660,7 @@ render_para (GtkTextRenderer *text_renderer,
cairo_t *cr = text_renderer->cr;
cairo_save (cr);
gdk_cairo_set_source_color (cr, selection);
gdk_cairo_set_source_rgba (cr, &selection);
cairo_rectangle (cr,
x + line_display->left_margin, selection_y,
screen_width, selection_height);
@ -654,7 +716,7 @@ render_para (GtkTextRenderer *text_renderer,
cairo_clip (cr);
cairo_region_destroy (clip_region);
gdk_cairo_set_source_color (cr, selection);
gdk_cairo_set_source_rgba (cr, &selection);
cairo_rectangle (cr,
x + PANGO_PIXELS (line_rect.x),
selection_y,
@ -677,7 +739,7 @@ render_para (GtkTextRenderer *text_renderer,
{
cairo_save (cr);
gdk_cairo_set_source_color (cr, selection);
gdk_cairo_set_source_rgba (cr, &selection);
cairo_rectangle (cr,
x + line_display->left_margin,
selection_y,
@ -701,7 +763,7 @@ render_para (GtkTextRenderer *text_renderer,
cairo_save (cr);
gdk_cairo_set_source_color (cr, selection);
gdk_cairo_set_source_rgba (cr, &selection);
cairo_rectangle (cr,
x + PANGO_PIXELS (line_rect.x) + PANGO_PIXELS (line_rect.width),
selection_y,
@ -739,15 +801,15 @@ render_para (GtkTextRenderer *text_renderer,
gdk_cairo_set_source_color (cr, &cursor_color);
cairo_paint (cr);
/* draw text under the cursor if any */
if (!line_display->cursor_at_line_end)
{
GtkStateType state;
GtkStyle *style;
/* draw text under the cursor if any */
if (!line_display->cursor_at_line_end)
{
GdkRGBA color;
style = gtk_widget_get_style (text_renderer->widget);
state = gtk_widget_get_state (text_renderer->widget);
gdk_cairo_set_source_color (cr, &style->base[state]);
state = gtk_widget_get_state_flags (text_renderer->widget);
gtk_style_context_get_background_color (context, state, &color);
gdk_cairo_set_source_rgba (cr, &color);
text_renderer_set_state (text_renderer, CURSOR);
@ -755,8 +817,7 @@ render_para (GtkTextRenderer *text_renderer,
line,
PANGO_SCALE * x + line_rect.x,
PANGO_SCALE * y + baseline);
}
}
cairo_restore (cr);
}
@ -795,7 +856,7 @@ gtk_text_layout_draw (GtkTextLayout *layout,
GSList *tmp_list;
GList *tmp_widgets;
GdkRectangle clip;
g_return_if_fail (GTK_IS_TEXT_LAYOUT (layout));
g_return_if_fail (layout->default_style != NULL);
g_return_if_fail (layout->buffer != NULL);
@ -809,10 +870,6 @@ gtk_text_layout_draw (GtkTextLayout *layout,
if (line_list == NULL)
return; /* nothing on the screen */
cairo_save (cr);
gdk_cairo_set_source_color (cr, &gtk_widget_get_style (widget)->text[gtk_widget_get_state (widget)]);
text_renderer = get_text_renderer ();
text_renderer_begin (text_renderer, widget, cr);
@ -934,7 +991,5 @@ gtk_text_layout_draw (GtkTextLayout *layout,
g_list_free (tmp_widgets);
}
cairo_restore (cr);
g_slist_free (line_list);
}