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