345 lines
12 KiB
C
345 lines
12 KiB
C
#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <math.h>
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#include <float.h>
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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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typedef struct _cairo_path_t cairo_path_t;
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typedef enum _cairo_line_cap {
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CAIRO_LINE_CAP_BUTT,
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CAIRO_LINE_CAP_ROUND,
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CAIRO_LINE_CAP_SQUARE
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} cairo_line_cap_t;
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typedef enum _cairo_line_join {
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CAIRO_LINE_JOIN_MITER,
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CAIRO_LINE_JOIN_ROUND,
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CAIRO_LINE_JOIN_BEVEL
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} cairo_line_join_t;
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typedef enum _cairo_fill_rule {
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CAIRO_FILL_RULE_WINDING,
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CAIRO_FILL_RULE_EVEN_ODD
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} cairo_fill_rule_t;
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static void (*cairo_move_to)(cairo_t *cr, double x, double y) = NULL;
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static void (*cairo_line_to)(cairo_t *cr, double x, double y) = NULL;
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static void (*cairo_curve_to)(cairo_t *cr,
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double x1, double y1,
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double x2, double y2,
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double x3, double y3) = NULL;
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static void (*cairo_close_path)(cairo_t *cr) = NULL;
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static void (*cairo_fill)(cairo_t *cr) = NULL;
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static void (*cairo_fill_preserve)(cairo_t *cr) = NULL;
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static void (*cairo_stroke)(cairo_t *cr) = NULL;
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static void (*cairo_set_source_rgba)(cairo_t *cr,
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double red, double green,
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double blue, double alpha) = NULL;
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static cairo_path_t *(*cairo_copy_path)(cairo_t *cr) = NULL;
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static void (*cairo_path_destroy)(cairo_path_t *path) = NULL;
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static void (*cairo_new_path)(cairo_t *cr) = NULL;
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static void (*cairo_append_path)(cairo_t *cr, const cairo_path_t *path) = NULL;
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static void (*cairo_set_line_width)(cairo_t *cr, double width) = NULL;
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static void (*cairo_set_line_cap)(cairo_t *cr, cairo_line_cap_t line_cap) = NULL;
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static void (*cairo_set_line_join)(cairo_t *cr, cairo_line_join_t line_join) = NULL;
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static void (*cairo_save)(cairo_t *cr) = NULL;
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static void (*cairo_restore)(cairo_t *cr) = NULL;
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static void (*cairo_set_dash) (cairo_t *cr, const double *dashes, int num_dashes, double offset) = NULL;
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static void (*cairo_set_fill_rule) (cairo_t *cr, cairo_fill_rule_t fill_rule);
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typedef struct _Ector_Renderer_Cairo_Shape_Data Ector_Renderer_Cairo_Shape_Data;
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struct _Ector_Renderer_Cairo_Shape_Data
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{
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Efl_Gfx_Shape_Public *public_shape;
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Ector_Cairo_Surface_Data *parent;
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Ector_Renderer_Shape_Data *shape;
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Ector_Renderer_Data *base;
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cairo_path_t *path;
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};
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static void
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_ector_renderer_cairo_shape_path_changed(void *data, const Efl_Event *event)
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{
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Ector_Renderer_Cairo_Shape_Data *pd = data;
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Efl_Gfx_Path_Change_Event *ev = event->info;
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if (!pd->path) return;
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if (ev && !((ev->what & EFL_GFX_CHANGE_FLAG_MATRIX) ||
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(ev->what & EFL_GFX_CHANGE_FLAG_PATH)))
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return;
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cairo_path_destroy(pd->path);
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pd->path = NULL;
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}
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static Eina_Bool
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_ector_renderer_cairo_shape_ector_renderer_prepare(Eo *obj, Ector_Renderer_Cairo_Shape_Data *pd)
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{
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const Efl_Gfx_Path_Command *cmds = NULL;
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const double *pts = NULL;
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ector_renderer_prepare(efl_super(obj, ECTOR_RENDERER_CAIRO_SHAPE_CLASS));
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if (pd->shape->fill)
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ector_renderer_prepare(pd->shape->fill);
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if (pd->shape->stroke.fill)
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ector_renderer_prepare(pd->shape->stroke.fill);
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if (pd->shape->stroke.marker)
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ector_renderer_prepare(pd->shape->stroke.marker);
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// shouldn't this be moved to the cairo base object?
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if (!pd->parent)
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{
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Ector_Renderer_Data *base;
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base = efl_data_scope_get(obj, ECTOR_RENDERER_CLASS);
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pd->parent = efl_data_xref(base->surface, ECTOR_CAIRO_SURFACE_CLASS, obj);
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}
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efl_gfx_path_get(obj, &cmds, &pts);
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if (!pd->path && cmds)
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{
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cairo_new_path(pd->parent->cairo);
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for (; *cmds != EFL_GFX_PATH_COMMAND_TYPE_END; cmds++)
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{
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switch (*cmds)
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{
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case EFL_GFX_PATH_COMMAND_TYPE_MOVE_TO:
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cairo_move_to(pd->parent->cairo, pts[0], pts[1]);
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pts += 2;
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break;
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case EFL_GFX_PATH_COMMAND_TYPE_LINE_TO:
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cairo_line_to(pd->parent->cairo, pts[0], pts[1]);
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pts += 2;
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break;
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case EFL_GFX_PATH_COMMAND_TYPE_CUBIC_TO:
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cairo_curve_to(pd->parent->cairo,
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pts[0], pts[1], pts[2], pts[3], // control points
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pts[4], pts[5]); // destination point
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pts += 6;
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break;
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case EFL_GFX_PATH_COMMAND_TYPE_CLOSE:
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cairo_close_path(pd->parent->cairo);
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break;
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case EFL_GFX_PATH_COMMAND_TYPE_LAST:
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case EFL_GFX_PATH_COMMAND_TYPE_END:
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break;
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}
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}
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pd->path = cairo_copy_path(pd->parent->cairo);
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}
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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_shape_ector_renderer_draw(Eo *obj, Ector_Renderer_Cairo_Shape_Data *pd, Efl_Gfx_Render_Op op, Eina_Array *clips, unsigned int mul_col)
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{
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int r, g, b, a;
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unsigned i;
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Efl_Gfx_Fill_Rule fill_rule;
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if (pd->path == NULL) return EINA_FALSE;
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cairo_save(pd->parent->cairo);
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ector_renderer_draw(efl_super(obj, ECTOR_RENDERER_CAIRO_SHAPE_CLASS), op, clips, mul_col);
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cairo_new_path(pd->parent->cairo);
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cairo_append_path(pd->parent->cairo, pd->path);
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fill_rule = efl_gfx_shape_fill_rule_get(obj);
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if (fill_rule == EFL_GFX_FILL_RULE_ODD_EVEN)
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cairo_set_fill_rule(pd->parent->cairo, CAIRO_FILL_RULE_EVEN_ODD);
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else
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cairo_set_fill_rule(pd->parent->cairo, CAIRO_FILL_RULE_WINDING);
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if (pd->shape->fill)
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ector_renderer_cairo_op_fill(pd->shape->fill, mul_col);
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if (pd->shape->stroke.fill || pd->public_shape->stroke.color.a > 0)
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{
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cairo_fill_preserve(pd->parent->cairo);
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if (pd->shape->stroke.fill)
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ector_renderer_cairo_op_fill(pd->shape->stroke.fill, mul_col);
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else
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{
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r = (((pd->public_shape->stroke.color.r * R_VAL(&mul_col)) + 0xff) >> 8);
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g = (((pd->public_shape->stroke.color.g * G_VAL(&mul_col)) + 0xff) >> 8);
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b = (((pd->public_shape->stroke.color.b * B_VAL(&mul_col)) + 0xff) >> 8);
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a = (((pd->public_shape->stroke.color.a * A_VAL(&mul_col)) + 0xff) >> 8);
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ector_color_argb_unpremul(a, &r, &g, &b);
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cairo_set_source_rgba(pd->parent->cairo, r/255.0, g/255.0, b/255.0, a/255.0);
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if (pd->public_shape->stroke.dash)
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{
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double *dashinfo;
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dashinfo = (double *) malloc(2 * pd->public_shape->stroke.dash_length * sizeof(double));
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for (i = 0; i < pd->public_shape->stroke.dash_length; i++)
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{
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dashinfo[i*2] = pd->public_shape->stroke.dash[i].length;
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dashinfo[i*2 + 1] = pd->public_shape->stroke.dash[i].gap;
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}
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cairo_set_dash(pd->parent->cairo, dashinfo, pd->public_shape->stroke.dash_length * 2, 0);
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free(dashinfo);
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}
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}
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// Set dash, cap and join
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cairo_set_line_width(pd->parent->cairo, (pd->public_shape->stroke.width * pd->public_shape->stroke.scale));
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cairo_set_line_cap(pd->parent->cairo, (cairo_line_cap_t) pd->public_shape->stroke.cap);
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cairo_set_line_join(pd->parent->cairo, (cairo_line_join_t) pd->public_shape->stroke.join);
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cairo_stroke(pd->parent->cairo);
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}
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else
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{
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cairo_fill(pd->parent->cairo);
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}
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cairo_restore(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_shape_ector_renderer_cairo_op_fill(Eo *obj EINA_UNUSED,
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Ector_Renderer_Cairo_Shape_Data *pd EINA_UNUSED,
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unsigned int mul_col EINA_UNUSED)
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{
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// FIXME: let's find out how to fill a shape with a shape later.
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// I need to read SVG specification and see how to map that with cairo.
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ERR("fill with shape not implemented\n");
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return EINA_FALSE;
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}
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static void
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_ector_renderer_cairo_shape_efl_gfx_path_bounds_get(const Eo *obj,
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Ector_Renderer_Cairo_Shape_Data *pd EINA_UNUSED,
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Eina_Rect *r)
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{
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Ector_Renderer_Cairo_Data *bd;
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// FIXME: It should be possible to ask cairo about this
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efl_gfx_path_bounds_get(obj, r);
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bd = efl_data_scope_get(obj, ECTOR_RENDERER_CAIRO_CLASS);
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r->x += bd->generic->origin.x;
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r->y += bd->generic->origin.y;
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}
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Eo *
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_ector_renderer_cairo_shape_efl_object_constructor(Eo *obj, Ector_Renderer_Cairo_Shape_Data *pd)
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{
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obj = efl_constructor(efl_super(obj, ECTOR_RENDERER_CAIRO_SHAPE_CLASS));
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if (!obj) return NULL;
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pd->public_shape = efl_data_xref(obj, EFL_GFX_SHAPE_MIXIN, obj);
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pd->shape = efl_data_xref(obj, ECTOR_RENDERER_SHAPE_MIXIN, obj);
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pd->base = efl_data_xref(obj, ECTOR_RENDERER_CLASS, obj);
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efl_event_callback_add(obj, EFL_GFX_PATH_EVENT_CHANGED, _ector_renderer_cairo_shape_path_changed, pd);
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return obj;
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}
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static Efl_Object *
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_ector_renderer_cairo_shape_efl_object_finalize(Eo *obj, Ector_Renderer_Cairo_Shape_Data *pd)
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{
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obj = efl_finalize(efl_super(obj, ECTOR_RENDERER_CAIRO_SHAPE_CLASS));
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if (!obj) return NULL;
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USE(pd->base, cairo_path_destroy, NULL);
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USE(pd->base, cairo_restore, NULL);
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USE(pd->base, cairo_fill, NULL);
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USE(pd->base, cairo_set_dash, NULL);
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USE(pd->base, cairo_fill_preserve, NULL);
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USE(pd->base, cairo_set_source_rgba, NULL);
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USE(pd->base, cairo_stroke, NULL);
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USE(pd->base, cairo_set_line_width, NULL);
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USE(pd->base, cairo_set_line_cap, NULL);
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USE(pd->base, cairo_set_line_join, NULL);
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USE(pd->base, cairo_new_path, NULL);
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USE(pd->base, cairo_append_path, NULL);
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USE(pd->base, cairo_save, NULL);
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USE(pd->base, cairo_copy_path, NULL);
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USE(pd->base, cairo_close_path, NULL);
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USE(pd->base, cairo_curve_to, NULL);
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USE(pd->base, cairo_line_to, NULL);
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USE(pd->base, cairo_move_to, NULL);
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USE(pd->base, cairo_set_fill_rule, NULL);
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return obj;
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}
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void
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_ector_renderer_cairo_shape_efl_object_destructor(Eo *obj, Ector_Renderer_Cairo_Shape_Data *pd)
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{
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Ector_Renderer_Data *base;
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// FIXME: As base class destructor can't call destructor of mixin class.
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// Call explicit API to free shape data.
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efl_gfx_path_reset(obj);
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base = efl_data_scope_get(obj, ECTOR_RENDERER_CLASS);
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efl_data_xunref(base->surface, pd->parent, obj);
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efl_data_xunref(obj, pd->shape, obj);
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efl_data_xunref(obj, pd->base, obj);
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efl_destructor(efl_super(obj, ECTOR_RENDERER_CAIRO_SHAPE_CLASS));
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if (pd->path) cairo_path_destroy(pd->path);
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}
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unsigned int
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_ector_renderer_cairo_shape_ector_renderer_crc_get(const Eo *obj,
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Ector_Renderer_Cairo_Shape_Data *pd)
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{
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unsigned int crc;
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crc = ector_renderer_crc_get(efl_super(obj, ECTOR_RENDERER_CAIRO_SHAPE_CLASS));
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crc = eina_crc((void*) &pd->shape->stroke.marker, sizeof (pd->shape->stroke.marker), crc, EINA_FALSE);
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crc = eina_crc((void*) &pd->public_shape->stroke.scale, sizeof (pd->public_shape->stroke.scale) * 3, crc, EINA_FALSE); // scale, width, centered
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crc = eina_crc((void*) &pd->public_shape->stroke.color, sizeof (pd->public_shape->stroke.color), crc, EINA_FALSE);
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crc = eina_crc((void*) &pd->public_shape->stroke.cap, sizeof (pd->public_shape->stroke.cap), crc, EINA_FALSE);
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crc = eina_crc((void*) &pd->public_shape->stroke.join, sizeof (pd->public_shape->stroke.join), crc, EINA_FALSE);
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if (pd->shape->fill) crc = _renderer_crc_get(pd->shape->fill, crc);
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if (pd->shape->stroke.fill) crc = _renderer_crc_get(pd->shape->stroke.fill, crc);
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if (pd->shape->stroke.marker) crc = _renderer_crc_get(pd->shape->stroke.marker, crc);
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if (pd->public_shape->stroke.dash_length)
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{
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crc = eina_crc((void*) pd->public_shape->stroke.dash, sizeof (Efl_Gfx_Dash) * pd->public_shape->stroke.dash_length, crc, EINA_FALSE);
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}
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return crc;
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}
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#include "ector_renderer_cairo_shape.eo.c"
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