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3c8b80dce2
Only "wait" and "all-scroll" are not implemented properly. OS X does not seem to have a proper interface to either cursor. Approximations are used instead; see the code. See bug 749178.
499 lines
13 KiB
C
499 lines
13 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, see <http://www.gnu.org/licenses/>.
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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 "gdkcursorprivate.h"
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#include "gdkquartzcursor.h"
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#include "gdkprivate-quartz.h"
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#include "xcursors.h"
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struct _GdkQuartzCursor
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{
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GdkCursor cursor;
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NSCursor *nscursor;
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};
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struct _GdkQuartzCursorClass
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{
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GdkCursorClass cursor_class;
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};
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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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GdkQuartzCursor *private;
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private = g_object_new (GDK_TYPE_QUARTZ_CURSOR,
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"cursor-type", cursor_type,
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"display", _gdk_display,
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NULL);
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private->nscursor = nscursor;
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return GDK_CURSOR (private);
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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] = g_object_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_quartz_display_get_cursor_for_type (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 g_object_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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GdkCursor *
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_gdk_quartz_display_get_cursor_for_surface (GdkDisplay *display,
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cairo_surface_t *surface,
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gdouble x,
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gdouble 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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GdkPixbuf *pixbuf;
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GDK_QUARTZ_ALLOC_POOL;
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pixbuf = gdk_pixbuf_get_from_surface (surface, 0, 0,
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cairo_image_surface_get_width (surface),
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cairo_image_surface_get_height (surface));
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image = gdk_quartz_pixbuf_to_ns_image_libgtk_only (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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g_object_unref (pixbuf);
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GDK_QUARTZ_RELEASE_POOL;
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return cursor;
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}
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/* OS X only exports a number of cursor types in its public NSCursor interface.
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* By overriding the private _coreCursorType method, we can tell OS X to load
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* one of its internal cursors instead (since cursor images are loaded on demand
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* instead of in advance). WebKit does this too.
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*/
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@interface gdkCoreCursor : NSCursor {
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@private
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int type;
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BOOL override;
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}
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@end
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@implementation gdkCoreCursor
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- (int)_coreCursorType
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{
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if (self->override)
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return self->type;
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return [super _coreCursorType];
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}
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#define CUSTOM_CURSOR_CTOR(name, id) \
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+ (instancetype)name \
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{ \
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gdkCoreCursor *obj; \
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obj = [self new]; \
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if (obj) { \
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obj->override = YES; \
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obj->type = id; \
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} \
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return obj; \
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}
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CUSTOM_CURSOR_CTOR(gdkHelpCursor, 40)
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CUSTOM_CURSOR_CTOR(gdkProgressCursor, 4)
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/* TODO OS X doesn't seem to have a way to get this. There is an undocumented
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* method +[NSCursor _waitCursor], but it doesn't actually return this cursor,
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* but rather some odd low-quality non-animating version of this cursor. Use
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* the progress cursor instead for now.
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*/
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CUSTOM_CURSOR_CTOR(gdkWaitCursor, 4)
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CUSTOM_CURSOR_CTOR(gdkAliasCursor, 2)
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CUSTOM_CURSOR_CTOR(gdkMoveCursor, 39)
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/* TODO OS X doesn't seem to provide one; copy the move cursor for now
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* since it looks similar to what we want. */
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CUSTOM_CURSOR_CTOR(gdkAllScrollCursor, 39)
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CUSTOM_CURSOR_CTOR(gdkNEResizeCursor, 29)
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CUSTOM_CURSOR_CTOR(gdkNWResizeCursor, 33)
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CUSTOM_CURSOR_CTOR(gdkSEResizeCursor, 35)
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CUSTOM_CURSOR_CTOR(gdkSWResizeCursor, 37)
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CUSTOM_CURSOR_CTOR(gdkEWResizeCursor, 28)
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CUSTOM_CURSOR_CTOR(gdkNSResizeCursor, 32)
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CUSTOM_CURSOR_CTOR(gdkNESWResizeCursor, 30)
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CUSTOM_CURSOR_CTOR(gdkNWSEResizeCursor, 34)
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CUSTOM_CURSOR_CTOR(gdkZoomInCursor, 42)
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CUSTOM_CURSOR_CTOR(gdkZoomOutCursor, 43)
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@end
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struct CursorsByName {
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const gchar *name;
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NSString *selector;
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};
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static const struct CursorsByName cursors_by_name[] = {
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/* Link & Status */
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{ "context-menu", @"contextualMenuCursor" },
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{ "help", @"gdkHelpCursor" },
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{ "pointer", @"pointingHandCursor" },
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{ "progress", @"gdkProgressCursor" },
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{ "wait", @"gdkWaitCursor" },
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/* Selection */
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{ "cell", @"crosshairCursor" },
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{ "crosshair", @"crosshairCursor" },
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{ "text", @"IBeamCursor" },
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{ "vertical-text", @"IBeamCursorForVerticalLayout" },
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/* Drag & Drop */
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{ "alias", @"gdkAliasCursor" },
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{ "copy", @"dragCopyCursor" },
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{ "move", @"gdkMoveCursor" },
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{ "no-drop", @"operationNotAllowedCursor" },
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{ "not-allowed", @"operationNotAllowedCursor" },
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{ "grab", @"openHandCursor" },
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{ "grabbing", @"closedHandCursor" },
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/* Resize & Scrolling */
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{ "all-scroll", @"gdkAllScrollCursor" },
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{ "col-resize", @"resizeLeftRightCursor" },
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{ "row-resize", @"resizeUpDownCursor" },
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{ "n-resize", @"resizeUpCursor" },
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{ "e-resize", @"resizeRightCursor" },
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{ "s-resize", @"resizeDownCursor" },
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{ "w-resize", @"resizeLeftCursor" },
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{ "ne-resize", @"gdkNEResizeCursor" },
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{ "nw-resize", @"gdkNWResizeCursor" },
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{ "se-resize", @"gdkSEResizeCursor" },
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{ "sw-resize", @"gdkSWResizeCursor" },
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{ "ew-resize", @"gdkEWResizeCursor" },
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{ "ns-resize", @"gdkNSResizeCursor" },
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{ "nesw-resize", @"gdkNESWResizeCursor" },
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{ "nwse-resize", @"gdkNWSEResizeCursor" },
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/* Zoom */
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{ "zoom-in", @"gdkZoomInCursor" },
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{ "zoom-out", @"gdkZoomOutCursor" },
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{ NULL, NULL },
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};
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GdkCursor*
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_gdk_quartz_display_get_cursor_for_name (GdkDisplay *display,
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const gchar *name)
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{
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NSCursor *nscursor;
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const struct CursorsByName *test;
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SEL selector;
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if (name == NULL || g_str_equal (name, "none"))
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return create_blank_cursor ();
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// use this selector if nothing found
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selector = @selector(arrowCursor);
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for (test = cursors_by_name; test->name != NULL; test++)
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if (g_str_equal (name, test->name))
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{
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selector = NSSelectorFromString(test->selector);
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break;
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}
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nscursor = [[gdkCoreCursor class] performSelector:selector];
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[nscursor retain];
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return gdk_quartz_cursor_new_from_nscursor (nscursor, GDK_CURSOR_IS_PIXMAP);
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}
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G_DEFINE_TYPE (GdkQuartzCursor, gdk_quartz_cursor, GDK_TYPE_CURSOR)
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static cairo_surface_t *gdk_quartz_cursor_get_surface (GdkCursor *cursor,
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gdouble *x_hot,
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gdouble *y_hot);
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static void
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gdk_quartz_cursor_finalize (GObject *object)
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{
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GdkQuartzCursor *private = GDK_QUARTZ_CURSOR (object);
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if (private->nscursor)
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[private->nscursor release];
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private->nscursor = NULL;
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}
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static void
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gdk_quartz_cursor_class_init (GdkQuartzCursorClass *quartz_cursor_class)
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{
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GdkCursorClass *cursor_class = GDK_CURSOR_CLASS (quartz_cursor_class);
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GObjectClass *object_class = G_OBJECT_CLASS (quartz_cursor_class);
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object_class->finalize = gdk_quartz_cursor_finalize;
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cursor_class->get_surface = gdk_quartz_cursor_get_surface;
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}
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static void
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gdk_quartz_cursor_init (GdkQuartzCursor *cursor)
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{
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}
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gboolean
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_gdk_quartz_display_supports_cursor_alpha (GdkDisplay *display)
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{
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return TRUE;
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}
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gboolean
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_gdk_quartz_display_supports_cursor_color (GdkDisplay *display)
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{
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return TRUE;
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}
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void
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_gdk_quartz_display_get_default_cursor_size (GdkDisplay *display,
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guint *width,
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guint *height)
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{
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/* Mac OS X doesn't have the notion of a default size */
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*width = 32;
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*height = 32;
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}
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void
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_gdk_quartz_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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/* 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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NSCursor *
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_gdk_quartz_cursor_get_ns_cursor (GdkCursor *cursor)
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{
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GdkQuartzCursor *cursor_private;
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if (!cursor)
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return [NSCursor arrowCursor];
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g_return_val_if_fail (GDK_IS_QUARTZ_CURSOR (cursor), NULL);
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cursor_private = GDK_QUARTZ_CURSOR (cursor);
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return cursor_private->nscursor;
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}
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static cairo_surface_t *
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gdk_quartz_cursor_get_surface (GdkCursor *cursor,
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gdouble *x_hot,
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gdouble *y_hot)
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{
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/* FIXME: Implement */
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return NULL;
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}
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