/* gdkgc-quartz.c
*
* Copyright (C) 2005 Imendio AB
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "gdkgc.h"
#include "gdkprivate-quartz.h"
static gpointer parent_class = NULL;
static void
gdk_quartz_gc_get_values (GdkGC *gc,
GdkGCValues *values)
{
GdkGCQuartz *private;
private = GDK_GC_QUARTZ (gc);
values->foreground.pixel = _gdk_gc_get_fg_pixel (gc);
values->background.pixel = _gdk_gc_get_bg_pixel (gc);
values->font = private->font;
values->function = private->function;
values->fill = _gdk_gc_get_fill (gc);
values->tile = _gdk_gc_get_tile (gc);
values->stipple = _gdk_gc_get_stipple (gc);
/* The X11 backend always returns a NULL clip_mask. */
values->clip_mask = NULL;
values->ts_x_origin = gc->ts_x_origin;
values->ts_y_origin = gc->ts_y_origin;
values->clip_x_origin = gc->clip_x_origin;
values->clip_y_origin = gc->clip_y_origin;
values->graphics_exposures = private->graphics_exposures;
values->line_width = private->line_width;
values->line_style = private->line_style;
values->cap_style = private->cap_style;
values->join_style = private->join_style;
}
static void
data_provider_release (void *info, const void *data, size_t size)
{
g_free (info);
}
static CGImageRef
create_clip_mask (GdkPixmap *source_pixmap)
{
int width, height, bytes_per_row, bits_per_pixel;
void *data;
CGImageRef source;
CGImageRef clip_mask;
CGContextRef cg_context;
CGDataProviderRef data_provider;
/* We need to flip the clip mask here, because this cannot be done during
* the drawing process when this mask will be used to do clipping. We
* quickly create a new CGImage, set up a CGContext, draw the source
* image while flipping, and done. If this appears too slow in the
* future, we would look into doing this by hand on the actual raw
* data.
*/
source = _gdk_pixmap_get_cgimage (source_pixmap);
width = CGImageGetWidth (source);
height = CGImageGetHeight (source);
bytes_per_row = CGImageGetBytesPerRow (source);
bits_per_pixel = CGImageGetBitsPerPixel (source);
data = g_malloc (height * bytes_per_row);
data_provider = CGDataProviderCreateWithData (data, data,
height * bytes_per_row,
data_provider_release);
clip_mask = CGImageCreate (width, height, 8,
bits_per_pixel,
bytes_per_row,
CGImageGetColorSpace (source),
CGImageGetAlphaInfo (source),
data_provider, NULL, FALSE,
kCGRenderingIntentDefault);
CGDataProviderRelease (data_provider);
cg_context = CGBitmapContextCreate (data,
width, height,
CGImageGetBitsPerComponent (source),
bytes_per_row,
CGImageGetColorSpace (source),
CGImageGetBitmapInfo (source));
CGContextTranslateCTM (cg_context, 0, height);
CGContextScaleCTM (cg_context, 1.0, -1.0);
CGContextDrawImage (cg_context,
CGRectMake (0, 0, width, height), source);
CGContextRelease (cg_context);
return clip_mask;
}
static void
gdk_quartz_gc_set_values (GdkGC *gc,
GdkGCValues *values,
GdkGCValuesMask mask)
{
GdkGCQuartz *private = GDK_GC_QUARTZ (gc);
if (mask & GDK_GC_FONT)
{
/* FIXME: implement font */
}
if (mask & GDK_GC_FUNCTION)
private->function = values->function;
if (mask & GDK_GC_SUBWINDOW)
private->subwindow_mode = values->subwindow_mode;
if (mask & GDK_GC_EXPOSURES)
private->graphics_exposures = values->graphics_exposures;
if (mask & GDK_GC_CLIP_MASK)
{
private->have_clip_region = FALSE;
private->have_clip_mask = values->clip_mask != NULL;
if (private->clip_mask)
CGImageRelease (private->clip_mask);
if (values->clip_mask)
private->clip_mask = create_clip_mask (values->clip_mask);
else
private->clip_mask = NULL;
}
if (mask & GDK_GC_LINE_WIDTH)
private->line_width = values->line_width;
if (mask & GDK_GC_LINE_STYLE)
private->line_style = values->line_style;
if (mask & GDK_GC_CAP_STYLE)
private->cap_style = values->cap_style;
if (mask & GDK_GC_JOIN_STYLE)
private->join_style = values->join_style;
}
static void
gdk_quartz_gc_set_dashes (GdkGC *gc,
gint dash_offset,
gint8 dash_list[],
gint n)
{
GdkGCQuartz *private = GDK_GC_QUARTZ (gc);
gint i;
private->dash_count = n;
g_free (private->dash_lengths);
private->dash_lengths = g_new (CGFloat, n);
for (i = 0; i < n; i++)
private->dash_lengths[i] = (CGFloat) dash_list[i];
private->dash_phase = (CGFloat) dash_offset;
}
static void
gdk_gc_quartz_finalize (GObject *object)
{
GdkGCQuartz *private = GDK_GC_QUARTZ (object);
if (private->clip_mask)
CGImageRelease (private->clip_mask);
if (private->ts_pattern)
CGPatternRelease (private->ts_pattern);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gdk_gc_quartz_class_init (GdkGCQuartzClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GdkGCClass *gc_class = GDK_GC_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gdk_gc_quartz_finalize;
gc_class->get_values = gdk_quartz_gc_get_values;
gc_class->set_values = gdk_quartz_gc_set_values;
gc_class->set_dashes = gdk_quartz_gc_set_dashes;
}
static void
gdk_gc_quartz_init (GdkGCQuartz *gc_quartz)
{
gc_quartz->function = GDK_COPY;
gc_quartz->subwindow_mode = GDK_CLIP_BY_CHILDREN;
gc_quartz->graphics_exposures = TRUE;
gc_quartz->line_width = 0;
gc_quartz->line_style = GDK_LINE_SOLID;
gc_quartz->cap_style = GDK_CAP_BUTT;
gc_quartz->join_style = GDK_JOIN_MITER;
}
GType
_gdk_gc_quartz_get_type (void)
{
static GType object_type = 0;
if (!object_type)
{
const GTypeInfo object_info =
{
sizeof (GdkGCQuartzClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gdk_gc_quartz_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GdkGCQuartz),
0, /* n_preallocs */
(GInstanceInitFunc) gdk_gc_quartz_init,
};
object_type = g_type_register_static (GDK_TYPE_GC,
"GdkGCQuartz",
&object_info, 0);
}
return object_type;
}
GdkGC *
_gdk_quartz_gc_new (GdkDrawable *drawable,
GdkGCValues *values,
GdkGCValuesMask values_mask)
{
GdkGC *gc;
gc = g_object_new (GDK_TYPE_GC_QUARTZ, NULL);
_gdk_gc_init (gc, drawable, values, values_mask);
gdk_quartz_gc_set_values (gc, values, values_mask);
return gc;
}
void
_gdk_windowing_gc_set_clip_region (GdkGC *gc,
const GdkRegion *region,
gboolean reset_origin)
{
GdkGCQuartz *private = GDK_GC_QUARTZ (gc);
if ((private->have_clip_region && ! region) || private->have_clip_mask)
{
if (private->clip_mask)
{
CGImageRelease (private->clip_mask);
private->clip_mask = NULL;
}
private->have_clip_mask = FALSE;
}
private->have_clip_region = region != NULL;
if (reset_origin)
{
gc->clip_x_origin = 0;
gc->clip_y_origin = 0;
}
}
void
_gdk_windowing_gc_copy (GdkGC *dst_gc,
GdkGC *src_gc)
{
GdkGCQuartz *dst_quartz_gc = GDK_GC_QUARTZ (dst_gc);
GdkGCQuartz *src_quartz_gc = GDK_GC_QUARTZ (src_gc);
if (dst_quartz_gc->font)
gdk_font_unref (dst_quartz_gc->font);
dst_quartz_gc->font = src_quartz_gc->font;
if (dst_quartz_gc->font)
gdk_font_ref (dst_quartz_gc->font);
dst_quartz_gc->function = src_quartz_gc->function;
dst_quartz_gc->subwindow_mode = src_quartz_gc->subwindow_mode;
dst_quartz_gc->graphics_exposures = src_quartz_gc->graphics_exposures;
dst_quartz_gc->have_clip_region = src_quartz_gc->have_clip_region;
dst_quartz_gc->have_clip_mask = src_quartz_gc->have_clip_mask;
if (dst_quartz_gc->clip_mask)
{
CGImageRelease (dst_quartz_gc->clip_mask);
dst_quartz_gc->clip_mask = NULL;
}
if (src_quartz_gc->clip_mask)
dst_quartz_gc->clip_mask = _gdk_pixmap_get_cgimage (GDK_PIXMAP (src_quartz_gc->clip_mask));
dst_quartz_gc->line_width = src_quartz_gc->line_width;
dst_quartz_gc->line_style = src_quartz_gc->line_style;
dst_quartz_gc->cap_style = src_quartz_gc->cap_style;
dst_quartz_gc->join_style = src_quartz_gc->join_style;
g_free (dst_quartz_gc->dash_lengths);
dst_quartz_gc->dash_lengths = g_memdup (src_quartz_gc->dash_lengths,
sizeof (CGFloat) * src_quartz_gc->dash_count);
dst_quartz_gc->dash_count = src_quartz_gc->dash_count;
dst_quartz_gc->dash_phase = src_quartz_gc->dash_phase;
}
GdkScreen *
gdk_gc_get_screen (GdkGC *gc)
{
return _gdk_screen;
}
struct PatternCallbackInfo
{
GdkGCQuartz *private_gc;
GdkDrawable *drawable;
};
static void
pattern_callback_info_release (void *info)
{
g_free (info);
}
static void
gdk_quartz_draw_tiled_pattern (void *info,
CGContextRef context)
{
struct PatternCallbackInfo *pinfo = info;
GdkGC *gc = GDK_GC (pinfo->private_gc);
CGImageRef pattern_image;
size_t width, height;
pattern_image = _gdk_pixmap_get_cgimage (GDK_PIXMAP (_gdk_gc_get_tile (gc)));
width = CGImageGetWidth (pattern_image);
height = CGImageGetHeight (pattern_image);
CGContextDrawImage (context,
CGRectMake (0, 0, width, height),
pattern_image);
CGImageRelease (pattern_image);
}
static void
gdk_quartz_draw_stippled_pattern (void *info,
CGContextRef context)
{
struct PatternCallbackInfo *pinfo = info;
GdkGC *gc = GDK_GC (pinfo->private_gc);
CGImageRef pattern_image;
CGRect rect;
CGColorRef color;
pattern_image = _gdk_pixmap_get_cgimage (GDK_PIXMAP (_gdk_gc_get_stipple (gc)));
rect = CGRectMake (0, 0,
CGImageGetWidth (pattern_image),
CGImageGetHeight (pattern_image));
CGContextClipToMask (context, rect, pattern_image);
color = _gdk_quartz_colormap_get_cgcolor_from_pixel (pinfo->drawable,
_gdk_gc_get_fg_pixel (gc));
CGContextSetFillColorWithColor (context, color);
CGColorRelease (color);
CGContextFillRect (context, rect);
CGImageRelease (pattern_image);
}
static void
gdk_quartz_draw_opaque_stippled_pattern (void *info,
CGContextRef context)
{
struct PatternCallbackInfo *pinfo = info;
GdkGC *gc = GDK_GC (pinfo->private_gc);
CGImageRef pattern_image;
CGRect rect;
CGColorRef color;
pattern_image = _gdk_pixmap_get_cgimage (GDK_PIXMAP (_gdk_gc_get_stipple (gc)));
rect = CGRectMake (0, 0,
CGImageGetWidth (pattern_image),
CGImageGetHeight (pattern_image));
color = _gdk_quartz_colormap_get_cgcolor_from_pixel (pinfo->drawable,
_gdk_gc_get_bg_pixel (gc));
CGContextSetFillColorWithColor (context, color);
CGColorRelease (color);
CGContextFillRect (context, rect);
CGContextClipToMask (context, rect, pattern_image);
color = _gdk_quartz_colormap_get_cgcolor_from_pixel (pinfo->drawable,
_gdk_gc_get_fg_pixel (gc));
CGContextSetFillColorWithColor (context, color);
CGColorRelease (color);
CGContextFillRect (context, rect);
CGImageRelease (pattern_image);
}
gboolean
_gdk_quartz_gc_update_cg_context (GdkGC *gc,
GdkDrawable *drawable,
CGContextRef context,
GdkQuartzContextValuesMask mask)
{
GdkGCQuartz *private;
guint32 fg_pixel;
guint32 bg_pixel;
g_return_val_if_fail (gc == NULL || GDK_IS_GC (gc), FALSE);
if (!gc)
return FALSE;
private = GDK_GC_QUARTZ (gc);
if (private->have_clip_region)
{
CGRect rect;
CGRect *cg_rects;
GdkRectangle *rects;
gint n_rects, i;
gdk_region_get_rectangles (_gdk_gc_get_clip_region (gc),
&rects, &n_rects);
if (!n_rects)
return FALSE;
if (n_rects == 1)
cg_rects = ▭
else
cg_rects = g_new (CGRect, n_rects);
for (i = 0; i < n_rects; i++)
{
cg_rects[i].origin.x = rects[i].x + gc->clip_x_origin;
cg_rects[i].origin.y = rects[i].y + gc->clip_y_origin;
cg_rects[i].size.width = rects[i].width;
cg_rects[i].size.height = rects[i].height;
}
CGContextClipToRects (context, cg_rects, n_rects);
g_free (rects);
if (cg_rects != &rect)
g_free (cg_rects);
}
else if (private->have_clip_mask && private->clip_mask)
{
/* Note: This is 10.4 only. For lower versions, we need to transform the
* mask into a region.
*/
CGContextClipToMask (context,
CGRectMake (gc->clip_x_origin, gc->clip_y_origin,
CGImageGetWidth (private->clip_mask),
CGImageGetHeight (private->clip_mask)),
private->clip_mask);
}
fg_pixel = _gdk_gc_get_fg_pixel (gc);
bg_pixel = _gdk_gc_get_bg_pixel (gc);
{
CGBlendMode blend_mode = kCGBlendModeNormal;
switch (private->function)
{
case GDK_COPY:
blend_mode = kCGBlendModeNormal;
break;
case GDK_INVERT:
case GDK_XOR:
blend_mode = kCGBlendModeExclusion;
fg_pixel = 0xffffffff;
bg_pixel = 0xffffffff;
break;
case GDK_CLEAR:
case GDK_AND:
case GDK_AND_REVERSE:
case GDK_AND_INVERT:
case GDK_NOOP:
case GDK_OR:
case GDK_EQUIV:
case GDK_OR_REVERSE:
case GDK_COPY_INVERT:
case GDK_OR_INVERT:
case GDK_NAND:
case GDK_NOR:
case GDK_SET:
blend_mode = kCGBlendModeNormal; /* FIXME */
break;
}
CGContextSetBlendMode (context, blend_mode);
}
/* FIXME: implement subwindow mode */
/* FIXME: implement graphics exposures */
if (mask & GDK_QUARTZ_CONTEXT_STROKE)
{
CGLineCap line_cap = kCGLineCapButt;
CGLineJoin line_join = kCGLineJoinMiter;
CGColorRef color;
color = _gdk_quartz_colormap_get_cgcolor_from_pixel (drawable,
fg_pixel);
CGContextSetStrokeColorWithColor (context, color);
CGColorRelease (color);
CGContextSetLineWidth (context, MAX (1.0, private->line_width));
switch (private->line_style)
{
case GDK_LINE_SOLID:
CGContextSetLineDash (context, 0.0, NULL, 0);
break;
case GDK_LINE_DOUBLE_DASH:
/* FIXME: Implement; for now, fall back to GDK_LINE_ON_OFF_DASH */
case GDK_LINE_ON_OFF_DASH:
CGContextSetLineDash (context, private->dash_phase,
private->dash_lengths, private->dash_count);
break;
}
switch (private->cap_style)
{
case GDK_CAP_NOT_LAST:
/* FIXME: Implement; for now, fall back to GDK_CAP_BUTT */
case GDK_CAP_BUTT:
line_cap = kCGLineCapButt;
break;
case GDK_CAP_ROUND:
line_cap = kCGLineCapRound;
break;
case GDK_CAP_PROJECTING:
line_cap = kCGLineCapSquare;
break;
}
CGContextSetLineCap (context, line_cap);
switch (private->join_style)
{
case GDK_JOIN_MITER:
line_join = kCGLineJoinMiter;
break;
case GDK_JOIN_ROUND:
line_join = kCGLineJoinRound;
break;
case GDK_JOIN_BEVEL:
line_join = kCGLineJoinBevel;
break;
}
CGContextSetLineJoin (context, line_join);
}
if (mask & GDK_QUARTZ_CONTEXT_FILL)
{
GdkFill fill = _gdk_gc_get_fill (gc);
CGColorSpaceRef baseSpace;
CGColorSpaceRef patternSpace;
CGFloat alpha = 1.0;
if (fill == GDK_SOLID)
{
CGColorRef color;
color = _gdk_quartz_colormap_get_cgcolor_from_pixel (drawable,
fg_pixel);
CGContextSetFillColorWithColor (context, color);
CGColorRelease (color);
}
else
{
struct PatternCallbackInfo *info;
if (!private->ts_pattern)
{
gfloat width, height;
gboolean is_colored = FALSE;
CGPatternCallbacks callbacks = { 0, NULL, NULL };
CGPoint phase;
GdkPixmapImplQuartz *pix_impl = NULL;
info = g_new (struct PatternCallbackInfo, 1);
private->ts_pattern_info = info;
/* Won't ref to avoid circular dependencies */
info->drawable = drawable;
info->private_gc = private;
callbacks.releaseInfo = pattern_callback_info_release;
switch (fill)
{
case GDK_TILED:
pix_impl = GDK_PIXMAP_IMPL_QUARTZ (GDK_PIXMAP_OBJECT (_gdk_gc_get_tile (gc))->impl);
width = pix_impl->width;
height = pix_impl->height;
is_colored = TRUE;
callbacks.drawPattern = gdk_quartz_draw_tiled_pattern;
break;
case GDK_STIPPLED:
pix_impl = GDK_PIXMAP_IMPL_QUARTZ (GDK_PIXMAP_OBJECT (_gdk_gc_get_stipple (gc))->impl);
width = pix_impl->width;
height = pix_impl->height;
is_colored = FALSE;
callbacks.drawPattern = gdk_quartz_draw_stippled_pattern;
break;
case GDK_OPAQUE_STIPPLED:
pix_impl = GDK_PIXMAP_IMPL_QUARTZ (GDK_PIXMAP_OBJECT (_gdk_gc_get_stipple (gc))->impl);
width = pix_impl->width;
height = pix_impl->height;
is_colored = TRUE;
callbacks.drawPattern = gdk_quartz_draw_opaque_stippled_pattern;
break;
default:
break;
}
phase = CGPointApplyAffineTransform (CGPointMake (gc->ts_x_origin, gc->ts_y_origin), CGContextGetCTM (context));
CGContextSetPatternPhase (context, CGSizeMake (phase.x, phase.y));
private->ts_pattern = CGPatternCreate (info,
CGRectMake (0, 0, width, height),
CGAffineTransformIdentity,
width, height,
kCGPatternTilingConstantSpacing,
is_colored,
&callbacks);
}
else
info = (struct PatternCallbackInfo *)private->ts_pattern_info;
/* Update drawable in the pattern callback info. Again, we
* won't ref to avoid circular dependencies.
*/
info->drawable = drawable;
baseSpace = (fill == GDK_STIPPLED) ? CGColorSpaceCreateDeviceRGB () : NULL;
patternSpace = CGColorSpaceCreatePattern (baseSpace);
CGContextSetFillColorSpace (context, patternSpace);
CGColorSpaceRelease (patternSpace);
CGColorSpaceRelease (baseSpace);
if (fill == GDK_STIPPLED)
{
CGColorRef color;
const CGFloat *components;
color = _gdk_quartz_colormap_get_cgcolor_from_pixel (drawable,
fg_pixel);
components = CGColorGetComponents (color);
CGContextSetFillPattern (context, private->ts_pattern,
components);
CGColorRelease (color);
}
else
CGContextSetFillPattern (context, private->ts_pattern, &alpha);
}
}
if (mask & GDK_QUARTZ_CONTEXT_TEXT)
{
/* FIXME: implement text */
}
if (GDK_IS_WINDOW_IMPL_QUARTZ (drawable))
private->is_window = TRUE;
else
private->is_window = FALSE;
return TRUE;
}