forked from enlightenment/efl
ector: first try at implementing linear gradient renderer.
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fdf3942aa0
commit
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@ -4,27 +4,128 @@
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#include <Eina.h>
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#include <Ector.h>
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#include <cairo/Ector_Cairo.h>
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#include "ector_private.h"
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#include "ector_cairo_private.h"
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static cairo_pattern_t *(*cairo_pattern_create_linear)(double x0, double y0,
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double x1, double y1) = NULL;
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static void (*cairo_set_source)(cairo_t *cr, cairo_pattern_t *source) = NULL;
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static void (*cairo_fill)(cairo_t *cr) = NULL;
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static void (*cairo_rectangle)(cairo_t *cr,
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double x, double y,
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double width, double height) = NULL;
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static void (*cairo_pattern_add_color_stop_rgba)(cairo_pattern_t *pattern, double offset,
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double red, double green, double blue, double alpha) = NULL;
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static void (*cairo_pattern_destroy)(cairo_pattern_t *pattern) = NULL;
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typedef struct _Ector_Renderer_Cairo_Gradient_Linear_Data Ector_Renderer_Cairo_Gradient_Linear_Data;
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struct _Ector_Renderer_Cairo_Gradient_Linear_Data
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{
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Ector_Cairo_Surface_Data *parent;
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cairo_pattern_t *pat;
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};
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static Eina_Bool
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_ector_renderer_cairo_gradient_linear_ector_renderer_generic_base_prepare(Eo *obj, Ector_Renderer_Cairo_Gradient_Linear_Data *pd, Ector_Surface *s)
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_ector_renderer_cairo_gradient_linear_ector_renderer_generic_base_prepare(Eo *obj,
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Ector_Renderer_Cairo_Gradient_Linear_Data *pd,
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Ector_Surface *s EINA_UNUSED)
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{
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Ector_Renderer_Generic_Gradient_Linear_Data *gld;
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Ector_Renderer_Generic_Gradient_Data *gd;
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unsigned int i;
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if (pd->pat) return EINA_FALSE;
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gld = eo_data_scope_get(obj, ECTOR_RENDERER_GENERIC_GRADIENT_LINEAR_CLASS);
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gd = eo_data_scope_get(obj, ECTOR_RENDERER_GENERIC_GRADIENT_CLASS);
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if (!gld || !gd) return EINA_FALSE;
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USE(obj, cairo_pattern_create_linear, EINA_FALSE);
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USE(obj, cairo_pattern_add_color_stop_rgba, EINA_FALSE);
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pd->pat = cairo_pattern_create_linear(gld->start.x, gld->start.y,
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gld->end.x, gld->end.y);
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for (i = 0; i < gd->colors_count; i++)
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cairo_pattern_add_color_stop_rgba(pd->pat, gd->colors[i].offset,
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gd->colors[i].r, gd->colors[i].g,
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gd->colors[i].b, gd->colors[i].a);
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if (!pd->parent)
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{
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Eo *parent;
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eo_do(obj, parent = eo_parent_get());
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if (!parent) return EINA_FALSE;
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pd->parent = eo_data_xref(parent, ECTOR_CAIRO_SURFACE_CLASS, obj);
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}
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return EINA_FALSE;
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}
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static Eina_Bool
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_ector_renderer_cairo_gradient_linear_ector_renderer_generic_base_draw(Eo *obj, Ector_Renderer_Cairo_Gradient_Linear_Data *pd, Ector_Surface *s, Ector_Rop op, Eina_Array *clips, int x, int y)
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_ector_renderer_cairo_gradient_linear_ector_renderer_generic_base_draw(Eo *obj,
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Ector_Renderer_Cairo_Gradient_Linear_Data *pd,
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Ector_Surface *s, Ector_Rop op, Eina_Array *clips, int x, int y)
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{
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Ector_Renderer_Generic_Gradient_Linear_Data *gld;
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// FIXME: don't ignore clipping and offset !
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gld = eo_data_scope_get(obj, ECTOR_RENDERER_GENERIC_GRADIENT_LINEAR_CLASS);
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if (!pd->pat || !gld || CHECK_CAIRO(pd->parent)) return EINA_FALSE;
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USE(obj, cairo_rectangle, EINA_FALSE);
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cairo_rectangle(pd->parent->cairo, gld->start.x, gld->start.y,
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gld->end.x - gld->start.x, gld->end.y - gld->start.y);
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eo_do(obj, ector_renderer_cairo_base_fill());
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cairo_fill(pd->parent->cairo);
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return EINA_TRUE;
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}
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static Eina_Bool
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_ector_renderer_cairo_gradient_linear_ector_renderer_generic_base_done(Eo *obj, Ector_Renderer_Cairo_Gradient_Linear_Data *pd)
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_ector_renderer_cairo_gradient_linear_ector_renderer_cairo_base_fill(Eo *obj,
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Ector_Renderer_Cairo_Gradient_Linear_Data *pd)
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{
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if (!pd->pat || CHECK_CAIRO(pd->parent)) return EINA_FALSE;
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USE(obj, cairo_set_source, EINA_FALSE);
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USE(obj, cairo_fill, EINA_FALSE);
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cairo_set_source(pd->parent->cairo, pd->pat);
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return EINA_TRUE;
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}
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void
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_ector_renderer_cairo_gradient_linear_eo_base_destructor(Eo *obj,
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Ector_Renderer_Cairo_Gradient_Linear_Data *pd)
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{
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Eo *parent;
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USE(obj, cairo_pattern_destroy, );
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if (pd->pat) cairo_pattern_destroy(pd->pat);
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pd->pat = NULL;
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eo_do(obj, parent = eo_parent_get());
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eo_data_xunref(parent, pd->parent, obj);
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eo_do_super(obj, ECTOR_RENDERER_CAIRO_GRADIENT_LINEAR_CLASS, eo_constructor());
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}
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void
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_ector_renderer_cairo_gradient_linear_efl_graphics_gradient_stop_set(Eo *obj, Ector_Renderer_Cairo_Gradient_Linear_Data *pd, const Efl_Graphics_Gradient_Stop *colors, unsigned int length)
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{
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USE(obj, cairo_pattern_destroy, );
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if (pd->pat) cairo_pattern_destroy(pd->pat);
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pd->pat = NULL;
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eo_do_super(obj, ECTOR_RENDERER_CAIRO_GRADIENT_LINEAR_CLASS,
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efl_graphics_gradient_stop_set(colors, length));
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}
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#include "ector_renderer_cairo_gradient_linear.eo.c"
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@ -1,10 +1,12 @@
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class Ector.Renderer.Cairo.Gradient_Linear (Ector.Renderer.Generic.Gradient_Linear)
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class Ector.Renderer.Cairo.Gradient_Linear (Ector.Renderer.Cairo.Base, Ector.Renderer.Generic.Gradient_Linear)
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{
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eo_prefix: ector_renderer_cairo_gradient_linear;
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legacy_prefix: null;
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implements {
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Ector.Renderer.Generic.Base.prepare;
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Ector.Renderer.Generic.Base.draw;
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Ector.Renderer.Generic.Base.done;
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Ector.Renderer.Cairo.Base.fill;
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Eo.Base.destructor;
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Efl.Graphics.Gradient.stop.set;
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}
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}
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