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414 lines
10 KiB
C
414 lines
10 KiB
C
/* gdkcursor-quartz.c
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*
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* Copyright (C) 2005-2007 Imendio AB
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include "gdkdisplay.h"
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#include "gdkcursor.h"
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#include "gdkprivate-quartz.h"
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#include "xcursors.h"
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static GdkCursor *cached_xcursors[G_N_ELEMENTS (xcursors)];
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static GdkCursor *
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gdk_quartz_cursor_new_from_nscursor (NSCursor *nscursor,
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GdkCursorType cursor_type)
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{
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GdkCursorPrivate *private;
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GdkCursor *cursor;
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private = g_new (GdkCursorPrivate, 1);
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private->nscursor = nscursor;
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cursor = (GdkCursor *)private;
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cursor->type = cursor_type;
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cursor->ref_count = 1;
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return cursor;
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}
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static GdkCursor *
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create_blank_cursor (void)
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{
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NSCursor *nscursor;
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NSImage *nsimage;
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NSSize size = { 1.0, 1.0 };
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nsimage = [[NSImage alloc] initWithSize:size];
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nscursor = [[NSCursor alloc] initWithImage:nsimage
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hotSpot:NSMakePoint(0.0, 0.0)];
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[nsimage release];
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return gdk_quartz_cursor_new_from_nscursor (nscursor, GDK_BLANK_CURSOR);
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}
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static gboolean
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get_bit (const guchar *data,
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gint width,
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gint height,
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gint x,
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gint y)
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{
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gint bytes_per_line;
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const guchar *src;
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if (x < 0 || y < 0 || x >= width || y >= height)
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return FALSE;
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bytes_per_line = (width + 7) / 8;
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src = &data[y * bytes_per_line];
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return ((src[x / 8] >> x % 8) & 1);
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}
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static GdkCursor *
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create_builtin_cursor (GdkCursorType cursor_type)
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{
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GdkCursor *cursor;
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NSBitmapImageRep *bitmap_rep;
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NSInteger mask_width, mask_height;
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gint src_width, src_height;
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gint dst_stride;
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const guchar *mask_start, *src_start;
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gint dx, dy;
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gint x, y;
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NSPoint hotspot;
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NSImage *image;
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NSCursor *nscursor;
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if (cursor_type >= G_N_ELEMENTS (xcursors) || cursor_type < 0)
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return NULL;
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cursor = cached_xcursors[cursor_type];
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if (cursor)
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return cursor;
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GDK_QUARTZ_ALLOC_POOL;
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src_width = xcursors[cursor_type].width;
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src_height = xcursors[cursor_type].height;
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mask_width = xcursors[cursor_type+1].width;
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mask_height = xcursors[cursor_type+1].height;
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bitmap_rep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL
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pixelsWide:mask_width pixelsHigh:mask_height
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bitsPerSample:8 samplesPerPixel:4
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hasAlpha:YES isPlanar:NO colorSpaceName:NSDeviceRGBColorSpace
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bytesPerRow:0 bitsPerPixel:0];
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dst_stride = [bitmap_rep bytesPerRow];
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src_start = xcursors[cursor_type].bits;
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mask_start = xcursors[cursor_type+1].bits;
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dx = xcursors[cursor_type+1].hotx - xcursors[cursor_type].hotx;
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dy = xcursors[cursor_type+1].hoty - xcursors[cursor_type].hoty;
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for (y = 0; y < mask_height; y++)
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{
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guchar *dst = [bitmap_rep bitmapData] + y * dst_stride;
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for (x = 0; x < mask_width; x++)
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{
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if (get_bit (mask_start, mask_width, mask_height, x, y))
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{
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if (get_bit (src_start, src_width, src_height, x - dx, y - dy))
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{
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*dst++ = 0;
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*dst++ = 0;
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*dst++ = 0;
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}
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else
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{
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*dst++ = 0xff;
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*dst++ = 0xff;
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*dst++ = 0xff;
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}
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*dst++ = 0xff;
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}
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else
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{
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*dst++ = 0;
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*dst++ = 0;
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*dst++ = 0;
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*dst++ = 0;
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}
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}
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}
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image = [[NSImage alloc] init];
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[image addRepresentation:bitmap_rep];
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[bitmap_rep release];
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hotspot = NSMakePoint (xcursors[cursor_type+1].hotx,
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xcursors[cursor_type+1].hoty);
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nscursor = [[NSCursor alloc] initWithImage:image hotSpot:hotspot];
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[image release];
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cursor = gdk_quartz_cursor_new_from_nscursor (nscursor, GDK_CURSOR_IS_PIXMAP);
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cached_xcursors[cursor_type] = gdk_cursor_ref (cursor);
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GDK_QUARTZ_RELEASE_POOL;
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return cursor;
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}
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GdkCursor*
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gdk_cursor_new_for_display (GdkDisplay *display,
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GdkCursorType cursor_type)
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{
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NSCursor *nscursor;
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g_return_val_if_fail (display == gdk_display_get_default (), NULL);
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switch (cursor_type)
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{
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case GDK_XTERM:
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nscursor = [NSCursor IBeamCursor];
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break;
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case GDK_SB_H_DOUBLE_ARROW:
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nscursor = [NSCursor resizeLeftRightCursor];
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break;
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case GDK_SB_V_DOUBLE_ARROW:
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nscursor = [NSCursor resizeUpDownCursor];
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break;
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case GDK_SB_UP_ARROW:
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case GDK_BASED_ARROW_UP:
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case GDK_BOTTOM_TEE:
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case GDK_TOP_SIDE:
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nscursor = [NSCursor resizeUpCursor];
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break;
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case GDK_SB_DOWN_ARROW:
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case GDK_BASED_ARROW_DOWN:
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case GDK_TOP_TEE:
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case GDK_BOTTOM_SIDE:
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nscursor = [NSCursor resizeDownCursor];
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break;
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case GDK_SB_LEFT_ARROW:
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case GDK_RIGHT_TEE:
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case GDK_LEFT_SIDE:
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nscursor = [NSCursor resizeLeftCursor];
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break;
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case GDK_SB_RIGHT_ARROW:
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case GDK_LEFT_TEE:
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case GDK_RIGHT_SIDE:
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nscursor = [NSCursor resizeRightCursor];
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break;
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case GDK_TCROSS:
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case GDK_CROSS:
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case GDK_CROSSHAIR:
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case GDK_DIAMOND_CROSS:
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nscursor = [NSCursor crosshairCursor];
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break;
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case GDK_HAND1:
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case GDK_HAND2:
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nscursor = [NSCursor pointingHandCursor];
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break;
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case GDK_CURSOR_IS_PIXMAP:
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return NULL;
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case GDK_BLANK_CURSOR:
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return create_blank_cursor ();
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default:
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return gdk_cursor_ref (create_builtin_cursor (cursor_type));
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}
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[nscursor retain];
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return gdk_quartz_cursor_new_from_nscursor (nscursor, cursor_type);
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}
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static NSImage *
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_gdk_quartz_pixbuf_to_ns_image (GdkPixbuf *pixbuf)
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{
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NSBitmapImageRep *bitmap_rep;
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NSImage *image;
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gboolean has_alpha;
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has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
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/* Create a bitmap image rep */
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bitmap_rep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL
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pixelsWide:gdk_pixbuf_get_width (pixbuf)
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pixelsHigh:gdk_pixbuf_get_height (pixbuf)
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bitsPerSample:8 samplesPerPixel:has_alpha ? 4 : 3
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hasAlpha:has_alpha isPlanar:NO colorSpaceName:NSDeviceRGBColorSpace
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bytesPerRow:0 bitsPerPixel:0];
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{
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/* Add pixel data to bitmap rep */
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guchar *src, *dst;
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int src_stride, dst_stride;
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int x, y;
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src_stride = gdk_pixbuf_get_rowstride (pixbuf);
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dst_stride = [bitmap_rep bytesPerRow];
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for (y = 0; y < gdk_pixbuf_get_height (pixbuf); y++)
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{
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src = gdk_pixbuf_get_pixels (pixbuf) + y * src_stride;
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dst = [bitmap_rep bitmapData] + y * dst_stride;
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for (x = 0; x < gdk_pixbuf_get_width (pixbuf); x++)
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{
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if (has_alpha)
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{
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guchar red, green, blue, alpha;
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red = *src++;
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green = *src++;
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blue = *src++;
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alpha = *src++;
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*dst++ = (red * alpha) / 255;
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*dst++ = (green * alpha) / 255;
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*dst++ = (blue * alpha) / 255;
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*dst++ = alpha;
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}
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else
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{
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*dst++ = *src++;
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*dst++ = *src++;
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*dst++ = *src++;
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}
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}
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}
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}
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image = [[NSImage alloc] init];
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[image addRepresentation:bitmap_rep];
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[bitmap_rep release];
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[image autorelease];
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return image;
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}
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GdkCursor *
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gdk_cursor_new_from_pixbuf (GdkDisplay *display,
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GdkPixbuf *pixbuf,
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gint x,
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gint y)
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{
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NSImage *image;
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NSCursor *nscursor;
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GdkCursor *cursor;
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gboolean has_alpha;
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g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
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g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
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g_return_val_if_fail (0 <= x && x < gdk_pixbuf_get_width (pixbuf), NULL);
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g_return_val_if_fail (0 <= y && y < gdk_pixbuf_get_height (pixbuf), NULL);
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GDK_QUARTZ_ALLOC_POOL;
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has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
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image = _gdk_quartz_pixbuf_to_ns_image (pixbuf);
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nscursor = [[NSCursor alloc] initWithImage:image hotSpot:NSMakePoint(x, y)];
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cursor = gdk_quartz_cursor_new_from_nscursor (nscursor, GDK_CURSOR_IS_PIXMAP);
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GDK_QUARTZ_RELEASE_POOL;
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return cursor;
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}
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GdkCursor*
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gdk_cursor_new_from_name (GdkDisplay *display,
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const gchar *name)
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{
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/* FIXME: Implement */
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return NULL;
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}
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void
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_gdk_cursor_destroy (GdkCursor *cursor)
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{
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GdkCursorPrivate *private;
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g_return_if_fail (cursor != NULL);
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g_return_if_fail (cursor->ref_count == 0);
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private = (GdkCursorPrivate *)cursor;
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[private->nscursor release];
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g_free (private);
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}
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gboolean
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gdk_display_supports_cursor_alpha (GdkDisplay *display)
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{
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g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
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return TRUE;
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}
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gboolean
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gdk_display_supports_cursor_color (GdkDisplay *display)
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{
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g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
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return TRUE;
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}
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guint
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gdk_display_get_default_cursor_size (GdkDisplay *display)
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{
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g_return_val_if_fail (GDK_IS_DISPLAY (display), 0);
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/* Mac OS X doesn't have the notion of a default size */
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return 32;
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}
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void
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gdk_display_get_maximal_cursor_size (GdkDisplay *display,
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guint *width,
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guint *height)
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{
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g_return_if_fail (GDK_IS_DISPLAY (display));
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/* Cursor sizes in Mac OS X can be arbitrarily large */
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*width = 65536;
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*height = 65536;
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}
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GdkDisplay *
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gdk_cursor_get_display (GdkCursor *cursor)
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{
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g_return_val_if_fail (cursor != NULL, NULL);
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return gdk_display_get_default ();
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}
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GdkPixbuf *
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gdk_cursor_get_image (GdkCursor *cursor)
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{
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/* FIXME: Implement */
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return NULL;
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}
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NSImage *
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gdk_quartz_pixbuf_to_ns_image_libgtk_only (GdkPixbuf *pixbuf)
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{
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return _gdk_quartz_pixbuf_to_ns_image (pixbuf);
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}
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