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snapshot: Refactor text rendering

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The code didn't change, it was just shuffled around to make the
with_bounds() versions of the text rendering unnecessary and instead
pass through the generic append_node() path.
This commit is contained in:
Benjamin Otte 2019-02-21 03:07:14 +01:00
parent e1570e9ebc
commit 0d119f81c8
6 changed files with 63 additions and 79 deletions
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4
gsk/gskrendernode.h
View File

@ -287,8 +287,8 @@ GDK_AVAILABLE_IN_ALL
GskRenderNode * gsk_text_node_new (PangoFont *font,
PangoGlyphString *glyphs,
const GdkRGBA *color,
double x,
double y);
float x,
float y);
GDK_AVAILABLE_IN_ALL
const PangoFont * gsk_text_node_peek_font (GskRenderNode *node);
GDK_AVAILABLE_IN_ALL

46
gsk/gskrendernodeimpl.c
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@ -4647,8 +4647,8 @@ GskRenderNode *
gsk_text_node_new (PangoFont *font,
PangoGlyphString *glyphs,
const GdkRGBA *color,
double x,
double y)
float x,
float y)
{
GskTextNode *self;
PangoRectangle ink_rect;
@ -4660,42 +4660,6 @@ 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);
@ -4705,7 +4669,11 @@ gsk_text_node_new_with_bounds (PangoFont *font,
self->num_glyphs = glyphs->num_glyphs;
memcpy (self->glyphs, glyphs->glyphs, sizeof (PangoGlyphInfo) * glyphs->num_glyphs);
graphene_rect_init_from_rect (&self->render_node.bounds, bounds);
graphene_rect_init (&self->render_node.bounds,
x + ink_rect.x - 1,
y + ink_rect.y - 1,
ink_rect.width + 2,
ink_rect.height + 2);
return &self->render_node;
}

7
gsk/gskrendernodeprivate.h
View File

@ -101,13 +101,6 @@ GskRenderNode * gsk_transform_node_new_with_category (GskRenderNode
GskMatrixCategory category);
GskMatrixCategory gsk_transform_node_get_category (GskRenderNode *node);
GskRenderNode * gsk_text_node_new_with_bounds (PangoFont *font,
PangoGlyphString *glyphs,
const GdkRGBA *color,
double x,
double y,
const graphene_rect_t *bounds);
G_END_DECLS

37
gtk/gskpango.c
View File

@ -113,41 +113,16 @@ gsk_pango_renderer_show_text_glyphs (PangoRenderer *renderer,
int y)
{
GskPangoRenderer *crenderer = (GskPangoRenderer *) (renderer);
int x_offset, y_offset;
GskRenderNode *node;
GdkRGBA color;
graphene_rect_t node_bounds;
PangoRectangle ink_rect;
pango_glyph_string_extents (glyphs, font, &ink_rect, NULL);
pango_extents_to_pixels (&ink_rect, NULL);
/* Don't create empty nodes */
if (ink_rect.width == 0 || ink_rect.height == 0)
return;
graphene_rect_init (&node_bounds,
(float)x/PANGO_SCALE - 1.0,
(float)y/PANGO_SCALE + ink_rect.y - 1.0,
ink_rect.x + ink_rect.width + 2.0,
ink_rect.height + 2.0);
gtk_snapshot_get_offset (crenderer->snapshot, &x_offset, &y_offset);
graphene_rect_offset (&node_bounds, x_offset, y_offset);
get_color (crenderer, PANGO_RENDER_PART_FOREGROUND, &color);
node = gsk_text_node_new_with_bounds (font,
glyphs,
&color,
x_offset + (double)x/PANGO_SCALE,
y_offset + (double)y/PANGO_SCALE,
&node_bounds);
if (node == NULL)
return;
gtk_snapshot_append_node_internal (crenderer->snapshot, node);
gsk_render_node_unref (node);
gtk_snapshot_append_text (crenderer->snapshot,
font,
glyphs,
&color,
(float) x / PANGO_SCALE,
(float) y / PANGO_SCALE);
}
static void

42
gtk/gtksnapshot.c
View File

@ -606,6 +606,23 @@ gtk_snapshot_ensure_affine (GtkSnapshot *snapshot,
*dx = *dy = 0;
}
static void
gtk_snapshot_ensure_translate (GtkSnapshot *snapshot,
float *dx,
float *dy)
{
const GtkSnapshotState *current_state = gtk_snapshot_get_current_state (snapshot);
float scale_x, scale_y;
if (gtk_transform_to_affine (current_state->transform, &scale_x, &scale_y, dx, dy) &&
scale_x == 1.0f && scale_y == 1.0f)
return;
gtk_snapshot_autopush_transform (snapshot);
*dx = *dy = 0;
}
static void
gtk_snapshot_ensure_identity (GtkSnapshot *snapshot)
{
@ -1463,6 +1480,31 @@ gtk_snapshot_render_layout (GtkSnapshot *snapshot,
gtk_snapshot_offset (snapshot, -x, -y);
}
void
gtk_snapshot_append_text (GtkSnapshot *snapshot,
PangoFont *font,
PangoGlyphString *glyphs,
const GdkRGBA *color,
float x,
float y)
{
GskRenderNode *node;
float dx, dy;
gtk_snapshot_ensure_translate (snapshot, &dx, &dy);
node = gsk_text_node_new (font,
glyphs,
color,
x + dx,
y + dy);
if (node == NULL)
return;
gtk_snapshot_append_node_internal (snapshot, node);
gsk_render_node_unref (node);
}
/**
* gtk_snapshot_append_linear_gradient:
* @snapshot: a #GtkSnapshot

6
gtk/gtksnapshotprivate.h
View File

@ -108,6 +108,12 @@ GtkSnapshot * gtk_snapshot_new_with_parent (GtkSnapshot
void gtk_snapshot_push_transform_with_category (GtkSnapshot *snapshot,
const graphene_matrix_t*transform,
GskMatrixCategory category);
void gtk_snapshot_append_text (GtkSnapshot *snapshot,
PangoFont *font,
PangoGlyphString *glyphs,
const GdkRGBA *color,
float x,
float y);
G_END_DECLS
#endif /* __GTK_SNAPSHOT_PRIVATE_H__ */