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b0e8d8483d
This commit takes several steps towards rendering text like we want to. The creation of the cairo surface and texture is moved to the backend (in GskVulkanRenderer). We add a mask shader that is used in the next text pipeline to use the texture as a mask, like cairo_mask_surface does. There is a separate color text pipeline that uses the already existing blend shaders to use the texture as a source, like cairo_paint does. The text node api is simplified to have just a single offset, which determines the left end of the text baseline, like all our other text drawing APIs.
219 lines
11 KiB
C
219 lines
11 KiB
C
/* GSK - The GTK Scene Kit
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*
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* Copyright 2016 Endless
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GSK_RENDER_NODE_H__
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#define __GSK_RENDER_NODE_H__
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#if !defined (__GSK_H_INSIDE__) && !defined (GSK_COMPILATION)
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#error "Only <gsk/gsk.h> can be included directly."
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#endif
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#include <gsk/gskroundedrect.h>
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#include <gsk/gsktypes.h>
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G_BEGIN_DECLS
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#define GSK_TYPE_RENDER_NODE (gsk_render_node_get_type ())
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#define GSK_IS_RENDER_NODE(obj) ((obj) != NULL)
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#define GSK_SERIALIZATION_ERROR (gsk_serialization_error_quark ())
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typedef struct _GskRenderNode GskRenderNode;
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typedef struct _GskColorStop GskColorStop;
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typedef struct _GskShadow GskShadow;
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struct _GskColorStop
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{
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double offset;
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GdkRGBA color;
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};
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struct _GskShadow
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{
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GdkRGBA color;
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float dx;
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float dy;
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float radius;
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};
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GDK_AVAILABLE_IN_3_90
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GType gsk_render_node_get_type (void) G_GNUC_CONST;
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GDK_AVAILABLE_IN_3_90
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GQuark gsk_serialization_error_quark (void);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_render_node_ref (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_90
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void gsk_render_node_unref (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_90
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GskRenderNodeType gsk_render_node_get_node_type (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_color_node_new (const GdkRGBA *rgba,
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const graphene_rect_t *bounds);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_texture_node_new (GskTexture *texture,
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const graphene_rect_t *bounds);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_linear_gradient_node_new (const graphene_rect_t *bounds,
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const graphene_point_t *start,
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const graphene_point_t *end,
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const GskColorStop *color_stops,
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gsize n_color_stops);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_repeating_linear_gradient_node_new (const graphene_rect_t *bounds,
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const graphene_point_t *start,
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const graphene_point_t *end,
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const GskColorStop *color_stops,
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gsize n_color_stops);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_border_node_new (const GskRoundedRect *outline,
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const float border_width[4],
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const GdkRGBA border_color[4]);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_inset_shadow_node_new (const GskRoundedRect *outline,
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const GdkRGBA *color,
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float dx,
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float dy,
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float spread,
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float blur_radius);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_outset_shadow_node_new (const GskRoundedRect *outline,
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const GdkRGBA *color,
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float dx,
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float dy,
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float spread,
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float blur_radius);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_cairo_node_new (const graphene_rect_t *bounds);
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GDK_AVAILABLE_IN_3_90
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cairo_t * gsk_cairo_node_get_draw_context (GskRenderNode *node,
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GskRenderer *renderer);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_container_node_new (GskRenderNode **children,
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guint n_children);
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GDK_AVAILABLE_IN_3_90
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guint gsk_container_node_get_n_children (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_container_node_get_child (GskRenderNode *node,
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guint idx);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_transform_node_new (GskRenderNode *child,
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const graphene_matrix_t *transform);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_transform_node_get_child (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_opacity_node_new (GskRenderNode *child,
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double opacity);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_opacity_node_get_child (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_color_matrix_node_new (GskRenderNode *child,
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const graphene_matrix_t *color_matrix,
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const graphene_vec4_t *color_offset);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_repeat_node_new (const graphene_rect_t *bounds,
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GskRenderNode *child,
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const graphene_rect_t *child_bounds);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_clip_node_new (GskRenderNode *child,
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const graphene_rect_t *clip);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_clip_node_get_child (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_rounded_clip_node_new (GskRenderNode *child,
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const GskRoundedRect *clip);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_rounded_clip_node_get_child (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_shadow_node_new (GskRenderNode *child,
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const GskShadow *shadows,
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gsize n_shadows);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_blend_node_new (GskRenderNode *bottom,
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GskRenderNode *top,
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GskBlendMode blend_mode);
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GDK_AVAILABLE_IN_3_92
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GskBlendMode gsk_blend_node_get_blend_mode (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_cross_fade_node_new (GskRenderNode *start,
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GskRenderNode *end,
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double progress);
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GDK_AVAILABLE_IN_3_92
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GskRenderNode * gsk_text_node_new (PangoFont *font,
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PangoGlyphString *glyphs,
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const GdkRGBA *color,
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double x,
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double y);
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GDK_AVAILABLE_IN_3_92
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GskRenderNode * gsk_blur_node_new (GskRenderNode *child,
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double radius);
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GDK_AVAILABLE_IN_3_90
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void gsk_render_node_set_scaling_filters (GskRenderNode *node,
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GskScalingFilter min_filter,
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GskScalingFilter mag_filter);
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GDK_AVAILABLE_IN_3_90
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void gsk_render_node_set_name (GskRenderNode *node,
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const char *name);
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GDK_AVAILABLE_IN_3_90
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const char * gsk_render_node_get_name (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_90
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void gsk_render_node_get_bounds (GskRenderNode *node,
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graphene_rect_t *bounds);
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GDK_AVAILABLE_IN_3_90
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void gsk_render_node_draw (GskRenderNode *node,
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cairo_t *cr);
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GDK_AVAILABLE_IN_3_90
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GBytes * gsk_render_node_serialize (GskRenderNode *node);
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GDK_AVAILABLE_IN_3_90
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gboolean gsk_render_node_write_to_file (GskRenderNode *node,
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const char *filename,
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GError **error);
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GDK_AVAILABLE_IN_3_90
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GskRenderNode * gsk_render_node_deserialize (GBytes *bytes,
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GError **error);
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G_END_DECLS
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#endif /* __GSK_RENDER_NODE_H__ */
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