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rendernodes: Add gsk_text_node_new_with_bounds

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An alternative GskTextNode constructor that does no text measuring. That
way, we can measure the text before and check if the node will be
outside of the current clip anyway.
This commit is contained in:
Timm Bäder 2018-03-04 17:35:17 +01:00
parent ee8132a439
commit 2d50d9ebe6
2 changed files with 44 additions and 5 deletions
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7
gsk/gskrendernode.h
View File

@ -288,6 +288,13 @@ GskRenderNode * gsk_text_node_new (PangoFont
double x,
double y);
GDK_AVAILABLE_IN_ALL
GskRenderNode * gsk_text_node_new_with_bounds (PangoFont *font,
PangoGlyphString *glyphs,
const GdkRGBA *color,
double x,
double y,
const graphene_rect_t *bounds);
GDK_AVAILABLE_IN_ALL
const PangoFont * gsk_text_node_peek_font (GskRenderNode *node);
GDK_AVAILABLE_IN_ALL
guint gsk_text_node_get_num_glyphs (GskRenderNode *node);

42
gsk/gskrendernodeimpl.c
View File

@ -4002,6 +4002,42 @@ gsk_text_node_new (PangoFont *font,
if (ink_rect.width == 0 || ink_rect.height == 0)
return NULL;
self = (GskTextNode *)gsk_text_node_new_with_bounds (font, glyphs, color, x, y,
&GRAPHENE_RECT_INIT (x,
y + ink_rect.y,
ink_rect.x + ink_rect.width,
ink_rect.height));
return &self->render_node;
}
/**
* gsk_text_node_new_with_bounds:
* @font: the #PangoFont containing the glyphs
* @glyphs: the #PangoGlyphString to render
* @color: the foreground color to render with
* @x: the x coordinate at which to put the baseline
* @y: the y coordinate at wihch to put the baseline
* @bounds: the node bounds
*
* Creates a render node that renders the given glyphs,
* Note that @color may not be used if the font contains
* color glyphs.
*
* This function will not do any text measuring, contrary to gsk_text_node_new().
*
* Returns: (nullable): a new text node, or %NULL
*/
GskRenderNode *
gsk_text_node_new_with_bounds (PangoFont *font,
PangoGlyphString *glyphs,
const GdkRGBA *color,
double x,
double y,
const graphene_rect_t *bounds)
{
GskTextNode *self;
self = (GskTextNode *) gsk_render_node_new (&GSK_TEXT_NODE_CLASS, sizeof (PangoGlyphInfo) * glyphs->num_glyphs);
self->font = g_object_ref (font);
@ -4011,11 +4047,7 @@ gsk_text_node_new (PangoFont *font,
self->num_glyphs = glyphs->num_glyphs;
memcpy (self->glyphs, glyphs->glyphs, sizeof (PangoGlyphInfo) * glyphs->num_glyphs);
graphene_rect_init (&self->render_node.bounds,
x,
y + ink_rect.y,
ink_rect.x + ink_rect.width,
ink_rect.height);
graphene_rect_init_from_rect (&self->render_node.bounds, bounds);
return &self->render_node;
}