/* 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. */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include "config.h" #include "gdkvisual.h" #include "gdkprivate-win32.h" //#include "gdkinternals.h" #include static void gdk_visual_decompose_mask (gulong mask, gint *shift, gint *prec); static GdkVisualPrivate *system_visual = NULL; static gint available_depths[1]; static GdkVisualType available_types[1]; static void gdk_visual_finalize (GObject *object) { g_error ("A GdkVisual object was finalized. This should not happen"); } static void gdk_visual_class_init (GObjectClass *class) { class->finalize = gdk_visual_finalize; } GType gdk_visual_get_type (void) { static GType object_type = 0; if (!object_type) { static const GTypeInfo object_info = { sizeof (GdkVisualClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) gdk_visual_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GdkVisual), 0, /* n_preallocs */ (GInstanceInitFunc) NULL, }; object_type = g_type_register_static (G_TYPE_OBJECT, "GdkVisual", &object_info, 0); } return object_type; } void _gdk_visual_init (void) { struct { BITMAPINFOHEADER bi; union { RGBQUAD colors[256]; DWORD fields[256]; } u; } bmi; HBITMAP hbm; int rastercaps, numcolors, sizepalette, bitspixel; system_visual = g_new (GdkVisualPrivate, 1); bitspixel = GetDeviceCaps (gdk_display_hdc, BITSPIXEL); rastercaps = GetDeviceCaps (gdk_display_hdc, RASTERCAPS); system_visual->xvisual = g_new (Visual, 1); system_visual->xvisual->visualid = 0; system_visual->xvisual->bitspixel = bitspixel; if (rastercaps & RC_PALETTE) { if (!getenv ("GDK_WIN32_ENABLE_BROKEN_PSEUDOCOLOR_VISUAL")) g_error ("Palettized display (%d-colour) mode not supported on Windows.", GetDeviceCaps (gdk_display_hdc, SIZEPALETTE)); system_visual->visual.type = GDK_VISUAL_PSEUDO_COLOR; numcolors = GetDeviceCaps (gdk_display_hdc, NUMCOLORS); sizepalette = GetDeviceCaps (gdk_display_hdc, SIZEPALETTE); system_visual->xvisual->map_entries = sizepalette; } else if (bitspixel == 1) { system_visual->visual.type = GDK_VISUAL_STATIC_GRAY; system_visual->xvisual->map_entries = 2; } else if (bitspixel == 4) { system_visual->visual.type = GDK_VISUAL_STATIC_COLOR; system_visual->xvisual->map_entries = 16; } else if (bitspixel == 8) { system_visual->visual.type = GDK_VISUAL_STATIC_COLOR; system_visual->xvisual->map_entries = 256; } else if (bitspixel == 16) { system_visual->visual.type = GDK_VISUAL_TRUE_COLOR; #if 1 /* This code by Mike Enright, * see http://www.users.cts.com/sd/m/menright/display.html */ memset (&bmi, 0, sizeof (bmi)); bmi.bi.biSize = sizeof (bmi.bi); hbm = CreateCompatibleBitmap (gdk_display_hdc, 1, 1); GetDIBits (gdk_display_hdc, hbm, 0, 1, NULL, (BITMAPINFO *) &bmi, DIB_RGB_COLORS); GetDIBits (gdk_display_hdc, hbm, 0, 1, NULL, (BITMAPINFO *) &bmi, DIB_RGB_COLORS); DeleteObject (hbm); if (bmi.bi.biCompression != BI_BITFIELDS) { /* Either BI_RGB or BI_RLE_something * .... or perhaps (!!) something else. * Theoretically biCompression might be * mmioFourCC('c','v','i','d') but I doubt it. */ if (bmi.bi.biCompression == BI_RGB) { /* It's 555 */ bitspixel = 15; system_visual->visual.red_mask = 0x00007C00; system_visual->visual.green_mask = 0x000003E0; system_visual->visual.blue_mask = 0x0000001F; } else { g_assert_not_reached (); } } else { DWORD allmasks = bmi.u.fields[0] | bmi.u.fields[1] | bmi.u.fields[2]; int k = 0; while (allmasks) { if (allmasks&1) k++; allmasks/=2; } bitspixel = k; system_visual->visual.red_mask = bmi.u.fields[0]; system_visual->visual.green_mask = bmi.u.fields[1]; system_visual->visual.blue_mask = bmi.u.fields[2]; } #else /* Old, incorrect (but still working) code. */ #if 0 system_visual->visual.red_mask = 0x0000F800; system_visual->visual.green_mask = 0x000007E0; system_visual->visual.blue_mask = 0x0000001F; #else system_visual->visual.red_mask = 0x00007C00; system_visual->visual.green_mask = 0x000003E0; system_visual->visual.blue_mask = 0x0000001F; #endif #endif } else if (bitspixel == 24 || bitspixel == 32) { bitspixel = 24; system_visual->visual.type = GDK_VISUAL_TRUE_COLOR; system_visual->visual.red_mask = 0x00FF0000; system_visual->visual.green_mask = 0x0000FF00; system_visual->visual.blue_mask = 0x000000FF; } else g_error ("_gdk_visual_init: unsupported BITSPIXEL: %d\n", bitspixel); system_visual->visual.depth = bitspixel; system_visual->visual.byte_order = GDK_LSB_FIRST; system_visual->visual.bits_per_rgb = 42; /* Not used? */ if ((system_visual->visual.type == GDK_VISUAL_TRUE_COLOR) || (system_visual->visual.type == GDK_VISUAL_DIRECT_COLOR)) { gdk_visual_decompose_mask (system_visual->visual.red_mask, &system_visual->visual.red_shift, &system_visual->visual.red_prec); gdk_visual_decompose_mask (system_visual->visual.green_mask, &system_visual->visual.green_shift, &system_visual->visual.green_prec); gdk_visual_decompose_mask (system_visual->visual.blue_mask, &system_visual->visual.blue_shift, &system_visual->visual.blue_prec); system_visual->xvisual->map_entries = 1 << (MAX (system_visual->visual.red_prec, MAX (system_visual->visual.green_prec, system_visual->visual.blue_prec))); } else { system_visual->visual.red_mask = 0; system_visual->visual.red_shift = 0; system_visual->visual.red_prec = 0; system_visual->visual.green_mask = 0; system_visual->visual.green_shift = 0; system_visual->visual.green_prec = 0; system_visual->visual.blue_mask = 0; system_visual->visual.blue_shift = 0; system_visual->visual.blue_prec = 0; } system_visual->visual.colormap_size = system_visual->xvisual->map_entries; available_depths[0] = system_visual->visual.depth; available_types[0] = system_visual->visual.type; } gint gdk_visual_get_best_depth (void) { return available_depths[0]; } GdkVisualType gdk_visual_get_best_type (void) { return available_types[0]; } GdkVisual* gdk_visual_get_system (void) { return ((GdkVisual*) system_visual); } GdkVisual* gdk_visual_get_best (void) { return ((GdkVisual*) system_visual); } GdkVisual* gdk_visual_get_best_with_depth (gint depth) { if (depth == system_visual->visual.depth) return (GdkVisual*) system_visual; else return NULL; } GdkVisual* gdk_visual_get_best_with_type (GdkVisualType visual_type) { if (visual_type == system_visual->visual.type) return (GdkVisual*) system_visual; else return NULL; } GdkVisual* gdk_visual_get_best_with_both (gint depth, GdkVisualType visual_type) { if ((depth == system_visual->visual.depth) && (visual_type == system_visual->visual.type)) return (GdkVisual*) system_visual; else return NULL; } void gdk_query_depths (gint **depths, gint *count) { *count = 1; *depths = available_depths; } void gdk_query_visual_types (GdkVisualType **visual_types, gint *count) { *count = 1; *visual_types = available_types; } GList* gdk_list_visuals (void) { return g_list_append (NULL, (gpointer) system_visual); } GdkVisual* gdk_visual_lookup (Visual *xvisual) { if (system_visual->xvisual == xvisual) return (GdkVisual *) system_visual; else return NULL; } static void gdk_visual_decompose_mask (gulong mask, gint *shift, gint *prec) { *shift = 0; *prec = 0; while (!(mask & 0x1)) { (*shift)++; mask >>= 1; } while (mask & 0x1) { (*prec)++; mask >>= 1; } }