/* gdkcursor-quartz.c
*
* Copyright (C) 2005-2007 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 "gdkdisplay.h"
#include "gdkcursor.h"
#include "gdkprivate-quartz.h"
#include "xcursors.h"
static GdkCursor *cached_xcursors[G_N_ELEMENTS (xcursors)];
static GdkCursor *
gdk_quartz_cursor_new_from_nscursor (NSCursor *nscursor,
GdkCursorType cursor_type)
{
GdkCursorPrivate *private;
GdkCursor *cursor;
private = g_new (GdkCursorPrivate, 1);
private->nscursor = nscursor;
cursor = (GdkCursor *)private;
cursor->type = cursor_type;
cursor->ref_count = 1;
return cursor;
}
static GdkCursor *
create_blank_cursor (void)
{
NSCursor *nscursor;
NSImage *nsimage;
NSSize size = { 1.0, 1.0 };
nsimage = [[NSImage alloc] initWithSize:size];
nscursor = [[NSCursor alloc] initWithImage:nsimage
hotSpot:NSMakePoint(0.0, 0.0)];
[nsimage release];
return gdk_quartz_cursor_new_from_nscursor (nscursor, GDK_BLANK_CURSOR);
}
static gboolean
get_bit (const guchar *data,
gint width,
gint height,
gint x,
gint y)
{
gint bytes_per_line;
const guchar *src;
if (x < 0 || y < 0 || x >= width || y >= height)
return FALSE;
bytes_per_line = (width + 7) / 8;
src = &data[y * bytes_per_line];
return ((src[x / 8] >> x % 8) & 1);
}
static GdkCursor *
create_builtin_cursor (GdkCursorType cursor_type)
{
GdkCursor *cursor;
NSBitmapImageRep *bitmap_rep;
NSInteger mask_width, mask_height;
gint src_width, src_height;
gint dst_stride;
const guchar *mask_start, *src_start;
gint dx, dy;
gint x, y;
NSPoint hotspot;
NSImage *image;
NSCursor *nscursor;
if (cursor_type >= G_N_ELEMENTS (xcursors) || cursor_type < 0)
return NULL;
cursor = cached_xcursors[cursor_type];
if (cursor)
return cursor;
GDK_QUARTZ_ALLOC_POOL;
src_width = xcursors[cursor_type].width;
src_height = xcursors[cursor_type].height;
mask_width = xcursors[cursor_type+1].width;
mask_height = xcursors[cursor_type+1].height;
bitmap_rep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL
pixelsWide:mask_width pixelsHigh:mask_height
bitsPerSample:8 samplesPerPixel:4
hasAlpha:YES isPlanar:NO colorSpaceName:NSDeviceRGBColorSpace
bytesPerRow:0 bitsPerPixel:0];
dst_stride = [bitmap_rep bytesPerRow];
src_start = xcursors[cursor_type].bits;
mask_start = xcursors[cursor_type+1].bits;
dx = xcursors[cursor_type+1].hotx - xcursors[cursor_type].hotx;
dy = xcursors[cursor_type+1].hoty - xcursors[cursor_type].hoty;
for (y = 0; y < mask_height; y++)
{
guchar *dst = [bitmap_rep bitmapData] + y * dst_stride;
for (x = 0; x < mask_width; x++)
{
if (get_bit (mask_start, mask_width, mask_height, x, y))
{
if (get_bit (src_start, src_width, src_height, x - dx, y - dy))
{
*dst++ = 0;
*dst++ = 0;
*dst++ = 0;
}
else
{
*dst++ = 0xff;
*dst++ = 0xff;
*dst++ = 0xff;
}
*dst++ = 0xff;
}
else
{
*dst++ = 0;
*dst++ = 0;
*dst++ = 0;
*dst++ = 0;
}
}
}
image = [[NSImage alloc] init];
[image addRepresentation:bitmap_rep];
[bitmap_rep release];
hotspot = NSMakePoint (xcursors[cursor_type+1].hotx,
xcursors[cursor_type+1].hoty);
nscursor = [[NSCursor alloc] initWithImage:image hotSpot:hotspot];
[image release];
cursor = gdk_quartz_cursor_new_from_nscursor (nscursor, GDK_CURSOR_IS_PIXMAP);
cached_xcursors[cursor_type] = gdk_cursor_ref (cursor);
GDK_QUARTZ_RELEASE_POOL;
return cursor;
}
GdkCursor*
gdk_cursor_new_for_display (GdkDisplay *display,
GdkCursorType cursor_type)
{
NSCursor *nscursor;
g_return_val_if_fail (display == gdk_display_get_default (), NULL);
switch (cursor_type)
{
case GDK_XTERM:
nscursor = [NSCursor IBeamCursor];
break;
case GDK_SB_H_DOUBLE_ARROW:
nscursor = [NSCursor resizeLeftRightCursor];
break;
case GDK_SB_V_DOUBLE_ARROW:
nscursor = [NSCursor resizeUpDownCursor];
break;
case GDK_SB_UP_ARROW:
case GDK_BASED_ARROW_UP:
case GDK_BOTTOM_TEE:
case GDK_TOP_SIDE:
nscursor = [NSCursor resizeUpCursor];
break;
case GDK_SB_DOWN_ARROW:
case GDK_BASED_ARROW_DOWN:
case GDK_TOP_TEE:
case GDK_BOTTOM_SIDE:
nscursor = [NSCursor resizeDownCursor];
break;
case GDK_SB_LEFT_ARROW:
case GDK_RIGHT_TEE:
case GDK_LEFT_SIDE:
nscursor = [NSCursor resizeLeftCursor];
break;
case GDK_SB_RIGHT_ARROW:
case GDK_LEFT_TEE:
case GDK_RIGHT_SIDE:
nscursor = [NSCursor resizeRightCursor];
break;
case GDK_TCROSS:
case GDK_CROSS:
case GDK_CROSSHAIR:
case GDK_DIAMOND_CROSS:
nscursor = [NSCursor crosshairCursor];
break;
case GDK_HAND1:
case GDK_HAND2:
nscursor = [NSCursor pointingHandCursor];
break;
case GDK_CURSOR_IS_PIXMAP:
return NULL;
case GDK_BLANK_CURSOR:
return create_blank_cursor ();
default:
return gdk_cursor_ref (create_builtin_cursor (cursor_type));
}
[nscursor retain];
return gdk_quartz_cursor_new_from_nscursor (nscursor, cursor_type);
}
GdkCursor*
gdk_cursor_new_from_pixmap (GdkPixmap *source,
GdkPixmap *mask,
const GdkColor *fg,
const GdkColor *bg,
gint x,
gint y)
{
NSBitmapImageRep *bitmap_rep;
NSImage *image;
NSCursor *nscursor;
GdkCursor *cursor;
int width, height;
gint tmp_x, tmp_y;
guchar *dst_data, *mask_data, *src_data;
guchar *mask_start, *src_start;
int dst_stride;
g_return_val_if_fail (GDK_IS_PIXMAP (source), NULL);
g_return_val_if_fail (GDK_IS_PIXMAP (mask), NULL);
g_return_val_if_fail (fg != NULL, NULL);
g_return_val_if_fail (bg != NULL, NULL);
GDK_QUARTZ_ALLOC_POOL;
gdk_drawable_get_size (source, &width, &height);
bitmap_rep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL
pixelsWide:(NSInteger)width pixelsHigh:(NSInteger)height
bitsPerSample:8 samplesPerPixel:4
hasAlpha:YES isPlanar:NO colorSpaceName:NSDeviceRGBColorSpace
bytesPerRow:0 bitsPerPixel:0];
dst_stride = [bitmap_rep bytesPerRow];
mask_start = GDK_PIXMAP_IMPL_QUARTZ (GDK_PIXMAP_OBJECT (mask)->impl)->data;
src_start = GDK_PIXMAP_IMPL_QUARTZ (GDK_PIXMAP_OBJECT (source)->impl)->data;
for (tmp_y = 0; tmp_y < height; tmp_y++)
{
dst_data = [bitmap_rep bitmapData] + tmp_y * dst_stride;
mask_data = mask_start + tmp_y * width;
src_data = src_start + tmp_y * width;
for (tmp_x = 0; tmp_x < width; tmp_x++)
{
if (*mask_data++)
{
const GdkColor *color;
if (*src_data++)
color = fg;
else
color = bg;
*dst_data++ = (color->red >> 8) & 0xff;
*dst_data++ = (color->green >> 8) & 0xff;
*dst_data++ = (color->blue >> 8) & 0xff;
*dst_data++ = 0xff;
}
else
{
*dst_data++ = 0x00;
*dst_data++ = 0x00;
*dst_data++ = 0x00;
*dst_data++ = 0x00;
src_data++;
}
}
}
image = [[NSImage alloc] init];
[image addRepresentation:bitmap_rep];
[bitmap_rep release];
nscursor = [[NSCursor alloc] initWithImage:image hotSpot:NSMakePoint(x, y)];
[image release];
cursor = gdk_quartz_cursor_new_from_nscursor (nscursor, GDK_CURSOR_IS_PIXMAP);
GDK_QUARTZ_RELEASE_POOL;
return cursor;
}
static NSImage *
_gdk_quartz_pixbuf_to_ns_image (GdkPixbuf *pixbuf)
{
NSBitmapImageRep *bitmap_rep;
NSImage *image;
gboolean has_alpha;
has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
/* Create a bitmap image rep */
bitmap_rep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL
pixelsWide:gdk_pixbuf_get_width (pixbuf)
pixelsHigh:gdk_pixbuf_get_height (pixbuf)
bitsPerSample:8 samplesPerPixel:has_alpha ? 4 : 3
hasAlpha:has_alpha isPlanar:NO colorSpaceName:NSDeviceRGBColorSpace
bytesPerRow:0 bitsPerPixel:0];
{
/* Add pixel data to bitmap rep */
guchar *src, *dst;
int src_stride, dst_stride;
int x, y;
src_stride = gdk_pixbuf_get_rowstride (pixbuf);
dst_stride = [bitmap_rep bytesPerRow];
for (y = 0; y < gdk_pixbuf_get_height (pixbuf); y++)
{
src = gdk_pixbuf_get_pixels (pixbuf) + y * src_stride;
dst = [bitmap_rep bitmapData] + y * dst_stride;
for (x = 0; x < gdk_pixbuf_get_width (pixbuf); x++)
{
if (has_alpha)
{
guchar red, green, blue, alpha;
red = *src++;
green = *src++;
blue = *src++;
alpha = *src++;
*dst++ = (red * alpha) / 255;
*dst++ = (green * alpha) / 255;
*dst++ = (blue * alpha) / 255;
*dst++ = alpha;
}
else
{
*dst++ = *src++;
*dst++ = *src++;
*dst++ = *src++;
}
}
}
}
image = [[NSImage alloc] init];
[image addRepresentation:bitmap_rep];
[bitmap_rep release];
[image autorelease];
return image;
}
GdkCursor *
gdk_cursor_new_from_pixbuf (GdkDisplay *display,
GdkPixbuf *pixbuf,
gint x,
gint y)
{
NSImage *image;
NSCursor *nscursor;
GdkCursor *cursor;
gboolean has_alpha;
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
g_return_val_if_fail (0 <= x && x < gdk_pixbuf_get_width (pixbuf), NULL);
g_return_val_if_fail (0 <= y && y < gdk_pixbuf_get_height (pixbuf), NULL);
GDK_QUARTZ_ALLOC_POOL;
has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
image = _gdk_quartz_pixbuf_to_ns_image (pixbuf);
nscursor = [[NSCursor alloc] initWithImage:image hotSpot:NSMakePoint(x, y)];
cursor = gdk_quartz_cursor_new_from_nscursor (nscursor, GDK_CURSOR_IS_PIXMAP);
GDK_QUARTZ_RELEASE_POOL;
return cursor;
}
GdkCursor*
gdk_cursor_new_from_name (GdkDisplay *display,
const gchar *name)
{
/* FIXME: Implement */
return NULL;
}
void
_gdk_cursor_destroy (GdkCursor *cursor)
{
GdkCursorPrivate *private;
g_return_if_fail (cursor != NULL);
g_return_if_fail (cursor->ref_count == 0);
private = (GdkCursorPrivate *)cursor;
[private->nscursor release];
g_free (private);
}
gboolean
gdk_display_supports_cursor_alpha (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
return TRUE;
}
gboolean
gdk_display_supports_cursor_color (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
return TRUE;
}
guint
gdk_display_get_default_cursor_size (GdkDisplay *display)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), 0);
/* Mac OS X doesn't have the notion of a default size */
return 32;
}
void
gdk_display_get_maximal_cursor_size (GdkDisplay *display,
guint *width,
guint *height)
{
g_return_if_fail (GDK_IS_DISPLAY (display));
/* Cursor sizes in Mac OS X can be arbitrarily large */
*width = 65536;
*height = 65536;
}
GdkDisplay *
gdk_cursor_get_display (GdkCursor *cursor)
{
g_return_val_if_fail (cursor != NULL, NULL);
return gdk_display_get_default ();
}
GdkPixbuf *
gdk_cursor_get_image (GdkCursor *cursor)
{
/* FIXME: Implement */
return NULL;
}
NSImage *
gdk_quartz_pixbuf_to_ns_image_libgtk_only (GdkPixbuf *pixbuf)
{
return _gdk_quartz_pixbuf_to_ns_image (pixbuf);
}