119 lines
4.4 KiB
C
119 lines
4.4 KiB
C
/* Helpful functions when dealing with cairo in gtk engines */
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#include <gtk/gtk.h>
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#include <math.h>
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typedef struct
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{
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gdouble r;
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gdouble g;
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gdouble b;
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gdouble a;
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} CairoColor;
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typedef struct
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{
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CairoColor bg[5];
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CairoColor fg[5];
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CairoColor dark[5];
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CairoColor light[5];
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CairoColor mid[5];
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CairoColor base[5];
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CairoColor text[5];
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CairoColor text_aa[5];
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CairoColor black;
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CairoColor white;
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} CairoColorCube;
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typedef enum
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{
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CR_CORNER_NONE = 0,
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CR_CORNER_TOPLEFT = 1,
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CR_CORNER_TOPRIGHT = 2,
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CR_CORNER_BOTTOMLEFT = 4,
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CR_CORNER_BOTTOMRIGHT = 8,
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CR_CORNER_ALL = 15
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} CairoCorners;
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typedef enum
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{
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CR_MIRROR_NONE = 0,
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CR_MIRROR_HORIZONTAL = 1 << 0,
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CR_MIRROR_VERTICAL = 1 << 1
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} CairoMirror;
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/*****************************/
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/* Pattern Fills */
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/*****************************/
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typedef enum {
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GE_DIRECTION_VERTICAL,
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GE_DIRECTION_HORIZONTAL,
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GE_DIRECTION_BOTH,
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GE_DIRECTION_NONE
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} GeDirection;
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#if ((CAIRO_VERSION_MAJOR < 1) || ((CAIRO_VERSION_MAJOR == 1) && (CAIRO_VERSION_MINOR < 2)))
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typedef enum _cairo_pattern_type {
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CAIRO_PATTERN_TYPE_SOLID,
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CAIRO_PATTERN_TYPE_SURFACE,
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CAIRO_PATTERN_TYPE_LINEAR,
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CAIRO_PATTERN_TYPE_RADIAL
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} cairo_pattern_type_t;
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# define CAIRO_PATTERN_TYPE(pattern) pattern->type;
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#else
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# define CAIRO_PATTERN_TYPE(pattern) cairo_pattern_get_type (pattern->handle);
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#endif
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typedef struct
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{
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#if ((CAIRO_VERSION_MAJOR < 1) || ((CAIRO_VERSION_MAJOR == 1) && (CAIRO_VERSION_MINOR < 2)))
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cairo_pattern_type_t type;
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#endif
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GeDirection scale;
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GeDirection translate;
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cairo_pattern_t *handle;
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cairo_operator_t operator;
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} CairoPattern;
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GE_INTERNAL void ge_hsb_from_color (const CairoColor *color, gdouble *hue, gdouble *saturation, gdouble *brightness);
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GE_INTERNAL void ge_color_from_hsb (gdouble hue, gdouble saturation, gdouble brightness, CairoColor *color);
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GE_INTERNAL void ge_gdk_color_to_cairo (const GdkColor * gc, CairoColor * cc);
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GE_INTERNAL void ge_cairo_color_to_gtk (const CairoColor *cc, GdkColor *c);
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GE_INTERNAL void ge_gtk_style_to_cairo_color_cube (GtkStyle * style, CairoColorCube *cube);
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GE_INTERNAL void ge_shade_color(const CairoColor *base, gdouble shade_ratio, CairoColor *composite);
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GE_INTERNAL void ge_saturate_color (const CairoColor * base, gdouble saturate_level, CairoColor *composite);
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GE_INTERNAL void ge_mix_color (const CairoColor *color1, const CairoColor *color2, gdouble mix_factor, CairoColor *composite);
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GE_INTERNAL cairo_t * ge_gdk_drawable_to_cairo (GdkDrawable *window, GdkRectangle *area);
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GE_INTERNAL void ge_cairo_set_color (cairo_t *cr, const CairoColor *color);
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GE_INTERNAL void ge_cairo_set_gdk_color_with_alpha (cairo_t *cr, const GdkColor *color, gdouble alpha);
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GE_INTERNAL void ge_cairo_pattern_add_color_stop_color (cairo_pattern_t *pattern, gfloat offset, const CairoColor *color);
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GE_INTERNAL void ge_cairo_pattern_add_color_stop_shade (cairo_pattern_t *pattern, gdouble offset, const CairoColor *color, gdouble shade);
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GE_INTERNAL void ge_cairo_rounded_corner (cairo_t *cr, double x, double y, double radius, CairoCorners corner);
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GE_INTERNAL void ge_cairo_rounded_rectangle (cairo_t *cr, double x, double y, double w, double h, double radius, CairoCorners corners);
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GE_INTERNAL void ge_cairo_stroke_rectangle (cairo_t *cr, double x, double y, double w, double h);
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GE_INTERNAL void ge_cairo_simple_border (cairo_t *cr, const CairoColor * tl, const CairoColor * br, gint x, gint y, gint width, gint height, gboolean topleft_overlap);
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GE_INTERNAL void ge_cairo_line (cairo_t *cr, const CairoColor *color, gint x1, gint y1, gint x2, gint y2);
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GE_INTERNAL void ge_cairo_polygon (cairo_t *cr, const CairoColor *color, GdkPoint *points, gint npoints);
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GE_INTERNAL void ge_cairo_mirror (cairo_t *cr, CairoMirror mirror, gint *x, gint *y, gint *width, gint *height);
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GE_INTERNAL void ge_cairo_exchange_axis (cairo_t *cr, gint *x, gint *y, gint *width, gint *height);
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GE_INTERNAL void ge_cairo_pattern_fill(cairo_t *canvas, CairoPattern *pattern, gint x, gint y, gint width, gint height);
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GE_INTERNAL CairoPattern *ge_cairo_color_pattern(CairoColor *base);
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GE_INTERNAL CairoPattern *ge_cairo_pixbuf_pattern(GdkPixbuf *pixbuf);
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GE_INTERNAL CairoPattern *ge_cairo_pixmap_pattern(GdkPixmap *pixmap);
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GE_INTERNAL CairoPattern *ge_cairo_linear_shade_gradient_pattern(CairoColor *base, gdouble shade1, gdouble shade2, gboolean vertical);
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GE_INTERNAL void ge_cairo_pattern_destroy(CairoPattern *pattern);
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