/* GDK - The GIMP Drawing Kit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * 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 "gdkwin32.h" #include "gdkcursor.h" #include "gdkinternals.h" #include "gdkpixmap-win32.h" #include "gdkprivate-win32.h" static const struct { const char *name; int type; } cursors[] = { { "x_cursor", 0 }, { "arrow", 2 }, { "based_arrow_down", 4 }, { "based_arrow_up", 6 }, { "boat", 8 }, { "bogosity", 10 }, { "bottom_left_corner", 12 }, { "bottom_right_corner", 14 }, { "bottom_side", 16 }, { "bottom_tee", 18 }, { "box_spiral", 20 }, { "center_ptr", 22 }, { "circle", 24 }, { "clock", 26 }, { "coffee_mug", 28 }, { "cross", 30 }, { "cross_reverse", 32 }, { "crosshair", 34 }, { "diamond_cross", 36 }, { "dot", 38 }, { "dotbox", 40 }, { "double_arrow", 42 }, { "draft_large", 44 }, { "draft_small", 46 }, { "draped_box", 48 }, { "exchange", 50 }, { "fleur", 52 }, { "gobbler", 54 }, { "gumby", 56 }, { "hand1", 58 }, { "hand2", 60 }, { "heart", 62 }, { "icon", 64 }, { "iron_cross", 66 }, { "left_ptr", 68 }, { "left_side", 70 }, { "left_tee", 72 }, { "leftbutton", 74 }, { "ll_angle", 76 }, { "lr_angle", 78 }, { "man", 80 }, { "middlebutton", 82 }, { "mouse", 84 }, { "pencil", 86 }, { "pirate", 88 }, { "plus", 90 }, { "question_arrow", 92 }, { "right_ptr", 94 }, { "right_side", 96 }, { "right_tee", 98 }, { "rightbutton", 100 }, { "rtl_logo", 102 }, { "sailboat", 104 }, { "sb_down_arrow", 106 }, { "sb_h_double_arrow", 108 }, { "sb_left_arrow", 110 }, { "sb_right_arrow", 112 }, { "sb_up_arrow", 114 }, { "sb_v_double_arrow", 116 }, { "shuttle", 118 }, { "sizing", 120 }, { "spider", 122 }, { "spraycan", 124 }, { "star", 126 }, { "target", 128 }, { "tcross", 130 }, { "top_left_arrow", 132 }, { "top_left_corner", 134 }, { "top_right_corner", 136 }, { "top_side", 138 }, { "top_tee", 140 }, { "trek", 142 }, { "ul_angle", 144 }, { "umbrella", 146 }, { "ur_angle", 148 }, { "watch", 150 }, { "xterm", 152 }, { NULL, 0 } }; GdkCursor* gdk_cursor_new (GdkCursorType cursor_type) { GdkCursorPrivate *private; GdkCursor *cursor; HCURSOR hcursor; int i; for (i = 0; cursors[i].name != NULL && cursors[i].type != cursor_type; i++) ; if (cursors[i].name != NULL) { hcursor = LoadCursor (gdk_dll_hinstance, cursors[i].name); if (hcursor == NULL) WIN32_API_FAILED ("LoadCursor"); GDK_NOTE (MISC, g_print ("gdk_cursor_new: %#x %d\n", (guint) hcursor, cursor_type)); } else { g_warning ("gdk_cursor_new: no cursor %d found", cursor_type); hcursor = NULL; } private = g_new (GdkCursorPrivate, 1); private->hcursor = hcursor; cursor = (GdkCursor*) private; cursor->type = cursor_type; cursor->ref_count = 1; return cursor; } static gboolean color_is_white (GdkColor *color) { return (color->red == 0xFFFF && color->green == 0xFFFF && color->blue == 0xFFFF); } GdkCursor* gdk_cursor_new_from_pixmap (GdkPixmap *source, GdkPixmap *mask, GdkColor *fg, GdkColor *bg, gint x, gint y) { GdkCursorPrivate *private; GdkCursor *cursor; GdkPixmapImplWin32 *source_impl, *mask_impl; GdkImage *source_image, *mask_image; HCURSOR hcursor; guchar *p, *q, *xor_mask, *and_mask; gint width, height, cursor_width, cursor_height; guchar residue; gint ix, iy; const gboolean bg_is_white = color_is_white (bg); 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); source_impl = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (source)->impl); mask_impl = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (mask)->impl); g_return_val_if_fail (source_impl->width == mask_impl->width && source_impl->height == mask_impl->height, NULL); width = source_impl->width; height = source_impl->height; cursor_width = GetSystemMetrics (SM_CXCURSOR); cursor_height = GetSystemMetrics (SM_CYCURSOR); g_return_val_if_fail (width <= cursor_width && height <= cursor_height, NULL); residue = (1 << ((8-(width%8))%8)) - 1; source_image = gdk_image_get (source, 0, 0, width, height); mask_image = gdk_image_get (mask, 0, 0, width, height); if (source_image->depth != 1 || mask_image->depth != 1) { gdk_image_unref (source_image); gdk_image_unref (mask_image); g_return_val_if_fail (source_image->depth == 1 && mask_image->depth == 1, NULL); } /* Such complex bit manipulation for this simple task, sigh. * The X cursor and Windows cursor concepts are quite different. * We assume here that we are always called with fg == black and * bg == white, *or* the other way around. Random colours won't work. * (Well, you will get a cursor, but not in those colours.) */ /* Note: The comments below refer to the case fg==black and * bg==white, as that was what was implemented first. The fg==white * (the "if (fg->pixel)" branches) case was added later. */ /* First set masked-out source bits, as all source bits matter on Windoze. * As we invert them below, they will be clear in the final xor_mask. */ for (iy = 0; iy < height; iy++) { p = (guchar *) source_image->mem + iy*source_image->bpl; q = (guchar *) mask_image->mem + iy*mask_image->bpl; for (ix = 0; ix < ((width-1)/8+1); ix++) if (bg_is_white) *p++ |= ~(*q++); else *p++ &= *q++; } /* XOR mask is initialized to zero */ xor_mask = g_malloc0 (cursor_width/8 * cursor_height); for (iy = 0; iy < height; iy++) { p = (guchar *) source_image->mem + iy*source_image->bpl; q = xor_mask + iy*cursor_width/8; for (ix = 0; ix < ((width-1)/8+1); ix++) if (bg_is_white) *q++ = ~(*p++); else *q++ = *p++; q[-1] &= ~residue; /* Clear left-over bits */ } /* AND mask is initialized to ones */ and_mask = g_malloc (cursor_width/8 * cursor_height); memset (and_mask, 0xFF, cursor_width/8 * cursor_height); for (iy = 0; iy < height; iy++) { p = (guchar *) mask_image->mem + iy*mask_image->bpl; q = and_mask + iy*cursor_width/8; for (ix = 0; ix < ((width-1)/8+1); ix++) *q++ = ~(*p++); q[-1] |= residue; /* Set left-over bits */ } hcursor = CreateCursor (gdk_app_hmodule, x, y, cursor_width, cursor_height, and_mask, xor_mask); GDK_NOTE (MISC, g_print ("gdk_cursor_new_from_pixmap: " "%#x (%dx%d) %#x (%dx%d) = %#x (%dx%d)\n", (guint) GDK_PIXMAP_HBITMAP (source), source_impl->width, source_impl->height, (guint) GDK_PIXMAP_HBITMAP (mask), mask_impl->width, mask_impl->height, (guint) hcursor, cursor_width, cursor_height)); g_free (xor_mask); g_free (and_mask); gdk_image_unref (source_image); gdk_image_unref (mask_image); private = g_new (GdkCursorPrivate, 1); private->hcursor = hcursor; cursor = (GdkCursor*) private; cursor->type = GDK_CURSOR_IS_PIXMAP; cursor->ref_count = 1; return cursor; } void _gdk_cursor_destroy (GdkCursor *cursor) { GdkCursorPrivate *private; g_return_if_fail (cursor != NULL); private = (GdkCursorPrivate *) cursor; GDK_NOTE (MISC, g_print ("_gdk_cursor_destroy: %#x\n", (cursor->type == GDK_CURSOR_IS_PIXMAP) ? (guint) private->hcursor : 0)); if (cursor->type == GDK_CURSOR_IS_PIXMAP) if (!DestroyCursor (private->hcursor)) WIN32_API_FAILED ("DestroyCursor"); g_free (private); }