/* GDK - The GIMP Drawing Kit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * Copyright (C) 1998-2004 Tor Lillqvist * Copyright (C) 2000-2004 Hans Breuer * * 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/. */ #define LINE_ATTRIBUTES (GDK_GC_LINE_WIDTH|GDK_GC_LINE_STYLE| \ GDK_GC_CAP_STYLE|GDK_GC_JOIN_STYLE) #include "config.h" #include #include "gdkgc.h" #include "gdkpixmap.h" #include "gdkprivate-win32.h" static void gdk_win32_gc_get_values (GdkGC *gc, GdkGCValues *values); static void gdk_win32_gc_set_values (GdkGC *gc, GdkGCValues *values, GdkGCValuesMask values_mask); static void gdk_win32_gc_set_dashes (GdkGC *gc, gint dash_offset, gint8 dash_list[], gint n); static void gdk_gc_win32_class_init (GdkGCWin32Class *klass); static void gdk_gc_win32_finalize (GObject *object); static gpointer parent_class = NULL; GType _gdk_gc_win32_get_type (void) { static GType object_type = 0; if (!object_type) { const GTypeInfo object_info = { sizeof (GdkGCWin32Class), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) gdk_gc_win32_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GdkGCWin32), 0, /* n_preallocs */ (GInstanceInitFunc) NULL, }; object_type = g_type_register_static (GDK_TYPE_GC, "GdkGCWin32", &object_info, 0); } return object_type; } static void gdk_gc_win32_class_init (GdkGCWin32Class *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); GdkGCClass *gc_class = GDK_GC_CLASS (klass); parent_class = g_type_class_peek_parent (klass); object_class->finalize = gdk_gc_win32_finalize; gc_class->get_values = gdk_win32_gc_get_values; gc_class->set_values = gdk_win32_gc_set_values; gc_class->set_dashes = gdk_win32_gc_set_dashes; } static void gdk_gc_win32_finalize (GObject *object) { GdkGCWin32 *win32_gc = GDK_GC_WIN32 (object); if (win32_gc->hcliprgn != NULL) DeleteObject (win32_gc->hcliprgn); g_free (win32_gc->pen_dashes); G_OBJECT_CLASS (parent_class)->finalize (object); } static void fixup_pen (GdkGCWin32 *win32_gc) { win32_gc->pen_style = 0; /* First look at GDK width and end cap style, set GDI pen type and * end cap. */ if (win32_gc->pen_width == 0 && win32_gc->cap_style == GDK_CAP_NOT_LAST) { /* Use a cosmetic pen, always width 1 */ win32_gc->pen_style |= PS_COSMETIC; } else if (win32_gc->pen_width <= 1 && win32_gc->cap_style == GDK_CAP_BUTT) { /* For 1 pixel wide lines PS_ENDCAP_ROUND means draw both ends, * even for one pixel length lines. But if we are drawing dashed * lines we can't use PS_ENDCAP_ROUND. */ if (win32_gc->line_style == GDK_LINE_SOLID) win32_gc->pen_style |= PS_GEOMETRIC | PS_ENDCAP_ROUND; else win32_gc->pen_style |= PS_GEOMETRIC | PS_ENDCAP_FLAT; } else { win32_gc->pen_style |= PS_GEOMETRIC; switch (win32_gc->cap_style) { /* For non-zero-width lines X11's CapNotLast works like CapButt */ case GDK_CAP_NOT_LAST: case GDK_CAP_BUTT: win32_gc->pen_style |= PS_ENDCAP_FLAT; break; case GDK_CAP_ROUND: win32_gc->pen_style |= PS_ENDCAP_ROUND; break; case GDK_CAP_PROJECTING: win32_gc->pen_style |= PS_ENDCAP_SQUARE; break; } } /* Next look at GDK line style, set GDI pen style attribute */ switch (win32_gc->line_style) { case GDK_LINE_SOLID: win32_gc->pen_style |= PS_SOLID; break; case GDK_LINE_ON_OFF_DASH: case GDK_LINE_DOUBLE_DASH: if (win32_gc->pen_dashes == NULL) { win32_gc->pen_dashes = g_new (DWORD, 1); win32_gc->pen_dashes[0] = 4; win32_gc->pen_num_dashes = 1; } if (!(win32_gc->pen_style & PS_TYPE_MASK) == PS_GEOMETRIC && win32_gc->pen_dashes[0] == 1 && (win32_gc->pen_num_dashes == 1 || (win32_gc->pen_num_dashes == 2 && win32_gc->pen_dashes[0] == 1))) win32_gc->pen_style |= PS_ALTERNATE; else win32_gc->pen_style |= PS_USERSTYLE; break; } /* Last, for if the GDI pen is geometric, set the join attribute */ if ((win32_gc->pen_style & PS_TYPE_MASK) == PS_GEOMETRIC) { switch (win32_gc->join_style) { case GDK_JOIN_MITER: win32_gc->pen_style |= PS_JOIN_MITER; break; case GDK_JOIN_ROUND: win32_gc->pen_style |= PS_JOIN_ROUND; break; case GDK_JOIN_BEVEL: win32_gc->pen_style |= PS_JOIN_BEVEL; break; } } } static void gdk_win32_gc_values_to_win32values (GdkGCValues *values, GdkGCValuesMask mask, GdkGCWin32 *win32_gc) { char *s = ""; GDK_NOTE (GC, g_print ("{")); if (mask & GDK_GC_FOREGROUND) { win32_gc->values_mask |= GDK_GC_FOREGROUND; GDK_NOTE (GC, (g_print ("fg=%.06x", _gdk_gc_get_fg_pixel (&win32_gc->parent_instance)), s = ",")); } if (mask & GDK_GC_BACKGROUND) { win32_gc->values_mask |= GDK_GC_BACKGROUND; GDK_NOTE (GC, (g_print ("%sbg=%.06x", s, _gdk_gc_get_bg_pixel (&win32_gc->parent_instance)), s = ",")); } if (mask & GDK_GC_FUNCTION) { GDK_NOTE (GC, (g_print ("%srop2=", s), s = ",")); switch (values->function) { #define CASE(x,y) case GDK_##x: win32_gc->rop2 = R2_##y; GDK_NOTE (GC, g_print (#y)); break CASE (COPY, COPYPEN); CASE (INVERT, NOT); CASE (XOR, XORPEN); CASE (CLEAR, BLACK); CASE (AND, MASKPEN); CASE (AND_REVERSE, MASKPENNOT); CASE (AND_INVERT, MASKNOTPEN); CASE (NOOP, NOP); CASE (OR, MERGEPEN); CASE (EQUIV, NOTXORPEN); CASE (OR_REVERSE, MERGEPENNOT); CASE (COPY_INVERT, NOTCOPYPEN); CASE (OR_INVERT, MERGENOTPEN); CASE (NAND, NOTMASKPEN); CASE (NOR, NOTMERGEPEN); CASE (SET, WHITE); #undef CASE } win32_gc->values_mask |= GDK_GC_FUNCTION; } if (mask & GDK_GC_FILL) { win32_gc->values_mask |= GDK_GC_FILL; GDK_NOTE (GC, (g_print ("%sfill=%s", s, _gdk_win32_fill_style_to_string (values->fill)), s = ",")); } if (mask & GDK_GC_TILE) { if (values->tile != NULL) { win32_gc->values_mask |= GDK_GC_TILE; GDK_NOTE (GC, (g_print ("%stile=%p", s, GDK_PIXMAP_HBITMAP (values->tile)), s = ",")); } else { win32_gc->values_mask &= ~GDK_GC_TILE; GDK_NOTE (GC, (g_print ("%stile=NULL", s), s = ",")); } } if (mask & GDK_GC_STIPPLE) { if (values->stipple != NULL) { win32_gc->values_mask |= GDK_GC_STIPPLE; GDK_NOTE (GC, (g_print ("%sstipple=%p", s, GDK_PIXMAP_HBITMAP (values->stipple)), s = ",")); } else { win32_gc->values_mask &= ~GDK_GC_STIPPLE; GDK_NOTE (GC, (g_print ("%sstipple=NULL", s), s = ",")); } } if (mask & GDK_GC_CLIP_MASK) { if (win32_gc->hcliprgn != NULL) DeleteObject (win32_gc->hcliprgn); if (values->clip_mask != NULL) { win32_gc->hcliprgn = _gdk_win32_bitmap_to_hrgn (values->clip_mask); win32_gc->values_mask |= GDK_GC_CLIP_MASK; } else { win32_gc->hcliprgn = NULL; win32_gc->values_mask &= ~GDK_GC_CLIP_MASK; } GDK_NOTE (GC, (g_print ("%sclip=%p", s, win32_gc->hcliprgn), s = ",")); } if (mask & GDK_GC_SUBWINDOW) { win32_gc->subwindow_mode = values->subwindow_mode; win32_gc->values_mask |= GDK_GC_SUBWINDOW; GDK_NOTE (GC, (g_print ("%ssubw=%d", s, win32_gc->subwindow_mode), s = ",")); } if (mask & GDK_GC_TS_X_ORIGIN) { win32_gc->values_mask |= GDK_GC_TS_X_ORIGIN; GDK_NOTE (GC, (g_print ("%sts_x=%d", s, values->ts_x_origin), s = ",")); } if (mask & GDK_GC_TS_Y_ORIGIN) { win32_gc->values_mask |= GDK_GC_TS_Y_ORIGIN; GDK_NOTE (GC, (g_print ("%sts_y=%d", s, values->ts_y_origin), s = ",")); } if (mask & GDK_GC_CLIP_X_ORIGIN) { win32_gc->values_mask |= GDK_GC_CLIP_X_ORIGIN; GDK_NOTE (GC, (g_print ("%sclip_x=%d", s, values->clip_x_origin), s = ",")); } if (mask & GDK_GC_CLIP_Y_ORIGIN) { win32_gc->values_mask |= GDK_GC_CLIP_Y_ORIGIN; GDK_NOTE (GC, (g_print ("%sclip_y=%d", s, values->clip_y_origin), s = ",")); } if (mask & GDK_GC_EXPOSURES) { win32_gc->graphics_exposures = values->graphics_exposures; win32_gc->values_mask |= GDK_GC_EXPOSURES; GDK_NOTE (GC, (g_print ("%sexp=%d", s, win32_gc->graphics_exposures), s = ",")); } if (mask & GDK_GC_LINE_WIDTH) { win32_gc->pen_width = values->line_width; win32_gc->values_mask |= GDK_GC_LINE_WIDTH; GDK_NOTE (GC, (g_print ("%spw=%d", s, win32_gc->pen_width), s = ",")); } if (mask & GDK_GC_LINE_STYLE) { win32_gc->line_style = values->line_style; win32_gc->values_mask |= GDK_GC_LINE_STYLE; } if (mask & GDK_GC_CAP_STYLE) { win32_gc->cap_style = values->cap_style; win32_gc->values_mask |= GDK_GC_CAP_STYLE; } if (mask & GDK_GC_JOIN_STYLE) { win32_gc->join_style = values->join_style; win32_gc->values_mask |= GDK_GC_JOIN_STYLE; } if (mask & (GDK_GC_LINE_WIDTH|GDK_GC_LINE_STYLE|GDK_GC_CAP_STYLE|GDK_GC_JOIN_STYLE)) { fixup_pen (win32_gc); GDK_NOTE (GC, (g_print ("%sps|=PS_STYLE_%s|PS_ENDCAP_%s|PS_JOIN_%s", s, _gdk_win32_psstyle_to_string (win32_gc->pen_style), _gdk_win32_psendcap_to_string (win32_gc->pen_style), _gdk_win32_psjoin_to_string (win32_gc->pen_style)), s = ",")); } GDK_NOTE (GC, g_print ("} mask=(%s)", _gdk_win32_gcvalues_mask_to_string (win32_gc->values_mask))); } GdkGC* _gdk_win32_gc_new (GdkDrawable *drawable, GdkGCValues *values, GdkGCValuesMask values_mask) { GdkGC *gc; GdkGCWin32 *win32_gc; /* NOTICE that the drawable here has to be the impl drawable, * not the publically-visible drawables. */ g_return_val_if_fail (GDK_IS_DRAWABLE_IMPL_WIN32 (drawable), NULL); gc = g_object_new (_gdk_gc_win32_get_type (), NULL); win32_gc = GDK_GC_WIN32 (gc); _gdk_gc_init (gc, drawable, values, values_mask); win32_gc->hcliprgn = NULL; win32_gc->rop2 = R2_COPYPEN; win32_gc->subwindow_mode = GDK_CLIP_BY_CHILDREN; win32_gc->graphics_exposures = TRUE; win32_gc->pen_width = 0; /* Don't get confused by the PS_ENDCAP_ROUND. For narrow GDI pens * (width == 1), PS_GEOMETRIC|PS_ENDCAP_ROUND works like X11's * CapButt. */ win32_gc->pen_style = PS_GEOMETRIC|PS_ENDCAP_ROUND|PS_JOIN_MITER; win32_gc->line_style = GDK_LINE_SOLID; win32_gc->cap_style = GDK_CAP_BUTT; win32_gc->join_style = GDK_JOIN_MITER; win32_gc->pen_dashes = NULL; win32_gc->pen_num_dashes = 0; win32_gc->pen_dash_offset = 0; win32_gc->pen_hbrbg = NULL; win32_gc->values_mask = GDK_GC_FUNCTION | GDK_GC_FILL; GDK_NOTE (GC, g_print ("_gdk_win32_gc_new: %p: ", win32_gc)); gdk_win32_gc_values_to_win32values (values, values_mask, win32_gc); GDK_NOTE (GC, g_print ("\n")); win32_gc->hdc = NULL; return gc; } static void gdk_win32_gc_get_values (GdkGC *gc, GdkGCValues *values) { GdkGCWin32 *win32_gc = GDK_GC_WIN32 (gc); values->foreground.pixel = _gdk_gc_get_fg_pixel (gc); values->background.pixel = _gdk_gc_get_bg_pixel (gc); switch (win32_gc->rop2) { case R2_COPYPEN: values->function = GDK_COPY; break; case R2_NOT: values->function = GDK_INVERT; break; case R2_XORPEN: values->function = GDK_XOR; break; case R2_BLACK: values->function = GDK_CLEAR; break; case R2_MASKPEN: values->function = GDK_AND; break; case R2_MASKPENNOT: values->function = GDK_AND_REVERSE; break; case R2_MASKNOTPEN: values->function = GDK_AND_INVERT; break; case R2_NOP: values->function = GDK_NOOP; break; case R2_MERGEPEN: values->function = GDK_OR; break; case R2_NOTXORPEN: values->function = GDK_EQUIV; break; case R2_MERGEPENNOT: values->function = GDK_OR_REVERSE; break; case R2_NOTCOPYPEN: values->function = GDK_COPY_INVERT; break; case R2_MERGENOTPEN: values->function = GDK_OR_INVERT; break; case R2_NOTMASKPEN: values->function = GDK_NAND; break; case R2_NOTMERGEPEN: values->function = GDK_NOR; break; case R2_WHITE: values->function = GDK_SET; break; } values->fill = _gdk_gc_get_fill (gc); values->tile = _gdk_gc_get_tile (gc); values->stipple = _gdk_gc_get_stipple (gc); /* Also the X11 backend always returns a NULL clip_mask */ values->clip_mask = NULL; values->subwindow_mode = win32_gc->subwindow_mode; values->ts_x_origin = win32_gc->parent_instance.ts_x_origin; values->ts_y_origin = win32_gc->parent_instance.ts_y_origin; values->clip_x_origin = win32_gc->parent_instance.clip_x_origin; values->clip_y_origin = win32_gc->parent_instance.clip_y_origin; values->graphics_exposures = win32_gc->graphics_exposures; values->line_width = win32_gc->pen_width; values->line_style = win32_gc->line_style; values->cap_style = win32_gc->cap_style; values->join_style = win32_gc->join_style; } static void gdk_win32_gc_set_values (GdkGC *gc, GdkGCValues *values, GdkGCValuesMask mask) { g_return_if_fail (GDK_IS_GC (gc)); GDK_NOTE (GC, g_print ("gdk_win32_gc_set_values: %p: ", GDK_GC_WIN32 (gc))); gdk_win32_gc_values_to_win32values (values, mask, GDK_GC_WIN32 (gc)); GDK_NOTE (GC, g_print ("\n")); } static void gdk_win32_gc_set_dashes (GdkGC *gc, gint dash_offset, gint8 dash_list[], gint n) { GdkGCWin32 *win32_gc; int i; g_return_if_fail (GDK_IS_GC (gc)); g_return_if_fail (dash_list != NULL); win32_gc = GDK_GC_WIN32 (gc); win32_gc->pen_num_dashes = n; g_free (win32_gc->pen_dashes); win32_gc->pen_dashes = g_new (DWORD, n); for (i = 0; i < n; i++) win32_gc->pen_dashes[i] = dash_list[i]; win32_gc->pen_dash_offset = dash_offset; fixup_pen (win32_gc); } void _gdk_windowing_gc_set_clip_region (GdkGC *gc, const cairo_region_t *region, gboolean reset_origin) { GdkGCWin32 *win32_gc = GDK_GC_WIN32 (gc); if (win32_gc->hcliprgn) DeleteObject (win32_gc->hcliprgn); if (region) { GDK_NOTE (GC, g_print ("gdk_gc_set_clip_region: %p: %s\n", win32_gc, _gdk_win32_cairo_region_to_string (region))); win32_gc->hcliprgn = _gdk_win32_cairo_region_to_hrgn (region, 0, 0); win32_gc->values_mask |= GDK_GC_CLIP_MASK; } else { GDK_NOTE (GC, g_print ("gdk_gc_set_clip_region: NULL\n")); win32_gc->hcliprgn = NULL; win32_gc->values_mask &= ~GDK_GC_CLIP_MASK; } if (reset_origin) { gc->clip_x_origin = 0; gc->clip_y_origin = 0; win32_gc->values_mask &= ~(GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN); } } void _gdk_windowing_gc_copy (GdkGC *dst_gc, GdkGC *src_gc) { GdkGCWin32 *dst_win32_gc = GDK_GC_WIN32 (dst_gc); GdkGCWin32 *src_win32_gc = GDK_GC_WIN32 (src_gc); GDK_NOTE (GC, g_print ("gdk_gc_copy: %p := %p\n", dst_win32_gc, src_win32_gc)); if (dst_win32_gc->hcliprgn != NULL) DeleteObject (dst_win32_gc->hcliprgn); g_free (dst_win32_gc->pen_dashes); dst_win32_gc->hcliprgn = src_win32_gc->hcliprgn; if (dst_win32_gc->hcliprgn) { /* create a new region, to copy to */ dst_win32_gc->hcliprgn = CreateRectRgn (0,0,1,1); /* overwrite from source */ CombineRgn (dst_win32_gc->hcliprgn, src_win32_gc->hcliprgn, NULL, RGN_COPY); } dst_win32_gc->values_mask = src_win32_gc->values_mask; dst_win32_gc->rop2 = src_win32_gc->rop2; dst_win32_gc->subwindow_mode = src_win32_gc->subwindow_mode; dst_win32_gc->graphics_exposures = src_win32_gc->graphics_exposures; dst_win32_gc->pen_width = src_win32_gc->pen_width; dst_win32_gc->pen_style = src_win32_gc->pen_style; dst_win32_gc->line_style = src_win32_gc->line_style; dst_win32_gc->cap_style = src_win32_gc->cap_style; dst_win32_gc->join_style = src_win32_gc->join_style; if (src_win32_gc->pen_dashes) dst_win32_gc->pen_dashes = g_memdup (src_win32_gc->pen_dashes, sizeof (DWORD) * src_win32_gc->pen_num_dashes); else dst_win32_gc->pen_dashes = NULL; dst_win32_gc->pen_num_dashes = src_win32_gc->pen_num_dashes; dst_win32_gc->pen_dash_offset = src_win32_gc->pen_dash_offset; dst_win32_gc->hdc = NULL; dst_win32_gc->saved_dc = FALSE; dst_win32_gc->holdpal = NULL; dst_win32_gc->pen_hbrbg = NULL; } GdkScreen * gdk_gc_get_screen (GdkGC *gc) { g_return_val_if_fail (GDK_IS_GC_WIN32 (gc), NULL); return _gdk_screen; } static guint bitmask[9] = { 0, 1, 3, 7, 15, 31, 63, 127, 255 }; COLORREF _gdk_win32_colormap_color (GdkColormap *colormap, gulong pixel) { const GdkVisual *visual; GdkColormapPrivateWin32 *colormap_private; guchar r, g, b; if (colormap == NULL) return DIBINDEX (pixel & 1); colormap_private = GDK_WIN32_COLORMAP_DATA (colormap); g_assert (colormap_private != NULL); visual = colormap->visual; switch (visual->type) { case GDK_VISUAL_GRAYSCALE: case GDK_VISUAL_PSEUDO_COLOR: case GDK_VISUAL_STATIC_COLOR: return PALETTEINDEX (pixel); case GDK_VISUAL_TRUE_COLOR: r = (pixel & visual->red_mask) >> visual->red_shift; r = (r * 255) / bitmask[visual->red_prec]; g = (pixel & visual->green_mask) >> visual->green_shift; g = (g * 255) / bitmask[visual->green_prec]; b = (pixel & visual->blue_mask) >> visual->blue_shift; b = (b * 255) / bitmask[visual->blue_prec]; return RGB (r, g, b); default: g_assert_not_reached (); return 0; } } gboolean predraw (GdkGC *gc, GdkColormap *colormap) { GdkGCWin32 *win32_gc = (GdkGCWin32 *) gc; GdkColormapPrivateWin32 *colormap_private; gint k; gboolean ok = TRUE; if (colormap && (colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR || colormap->visual->type == GDK_VISUAL_STATIC_COLOR)) { colormap_private = GDK_WIN32_COLORMAP_DATA (colormap); g_assert (colormap_private != NULL); if (!(win32_gc->holdpal = SelectPalette (win32_gc->hdc, colormap_private->hpal, FALSE))) WIN32_GDI_FAILED ("SelectPalette"), ok = FALSE; else if ((k = RealizePalette (win32_gc->hdc)) == GDI_ERROR) WIN32_GDI_FAILED ("RealizePalette"), ok = FALSE; else if (k > 0) GDK_NOTE (COLORMAP, g_print ("predraw: realized %p: %d colors\n", colormap_private->hpal, k)); } return ok; } static GdkDrawableImplWin32 * get_impl_drawable (GdkDrawable *drawable) { if (GDK_IS_DRAWABLE_IMPL_WIN32 (drawable)) return GDK_DRAWABLE_IMPL_WIN32(drawable); else if (GDK_IS_WINDOW (drawable)) return GDK_DRAWABLE_IMPL_WIN32 ((GDK_WINDOW_OBJECT (drawable))->impl); else if (GDK_IS_PIXMAP (drawable)) return GDK_DRAWABLE_IMPL_WIN32 ((GDK_PIXMAP_OBJECT (drawable))->impl); else g_assert_not_reached (); return NULL; } /** * gdk_win32_hdc_get: * @drawable: destination #GdkDrawable * @gc: #GdkGC to use for drawing on @drawable * @usage: mask indicating what properties needs to be set up * * Allocates a Windows device context handle (HDC) for drawing into * @drawable, and sets it up appropriately according to @usage. * * Each #GdkGC can at one time have only one HDC associated with it. * * The following flags in @mask are handled: * * If %GDK_GC_FOREGROUND is set in @mask, a solid brush of the * foreground color in @gc is selected into the HDC. The text color of * the HDC is also set. If the @drawable has a palette (256-color * mode), the palette is selected and realized. * * If any of the line attribute flags (%GDK_GC_LINE_WIDTH, * %GDK_GC_LINE_STYLE, %GDK_GC_CAP_STYLE and %GDK_GC_JOIN_STYLE) is * set in @mask, a solid pen of the foreground color and appropriate * width and stule is created and selected into the HDC. Note that the * dash properties are not completely implemented. * * Some things are done regardless of @mask: If the function in @gc is * any other than %GDK_COPY, the raster operation of the HDC is * set. If @gc has a clip mask, the clip region of the HDC is set. * * Note that the fill style, tile, stipple, and tile and stipple * origins in the @gc are ignored by this function. (In general, tiles * and stipples can't be implemented directly on Win32; you need to do * multiple pass drawing and blitting to implement tiles or * stipples. GDK does just that when you call the GDK drawing * functions with a GC that asks for tiles or stipples.) * * When the HDC is no longer used, it should be released by calling * gdk_win32_hdc_release() with the same * parameters. * * If you modify the HDC by calling SelectObject * you should undo those modifications before calling * gdk_win32_hdc_release(). * * Return value: The HDC. **/ HDC gdk_win32_hdc_get (GdkDrawable *drawable, GdkGC *gc, GdkGCValuesMask usage) { GdkGCWin32 *win32_gc = (GdkGCWin32 *) gc; GdkDrawableImplWin32 *impl = NULL; gboolean ok = TRUE; COLORREF fg = RGB (0, 0, 0), bg = RGB (255, 255, 255); HPEN hpen; HBRUSH hbr; g_assert (win32_gc->hdc == NULL); impl = get_impl_drawable (drawable); win32_gc->hdc = _gdk_win32_drawable_acquire_dc (GDK_DRAWABLE (impl)); ok = win32_gc->hdc != NULL; if (ok && (win32_gc->saved_dc = SaveDC (win32_gc->hdc)) == 0) WIN32_GDI_FAILED ("SaveDC"), ok = FALSE; if (ok && (usage & (GDK_GC_FOREGROUND | GDK_GC_BACKGROUND))) ok = predraw (gc, impl->colormap); if (ok && (usage & GDK_GC_FOREGROUND)) { fg = _gdk_win32_colormap_color (impl->colormap, _gdk_gc_get_fg_pixel (gc)); if ((hbr = CreateSolidBrush (fg)) == NULL) WIN32_GDI_FAILED ("CreateSolidBrush"), ok = FALSE; if (ok && SelectObject (win32_gc->hdc, hbr) == NULL) WIN32_GDI_FAILED ("SelectObject"), ok = FALSE; if (ok && SetTextColor (win32_gc->hdc, fg) == CLR_INVALID) WIN32_GDI_FAILED ("SetTextColor"), ok = FALSE; } if (ok && (usage & LINE_ATTRIBUTES)) { /* For drawing GDK_LINE_DOUBLE_DASH */ if ((usage & GDK_GC_BACKGROUND) && win32_gc->line_style == GDK_LINE_DOUBLE_DASH) { bg = _gdk_win32_colormap_color (impl->colormap, _gdk_gc_get_bg_pixel (gc)); if ((win32_gc->pen_hbrbg = CreateSolidBrush (bg)) == NULL) WIN32_GDI_FAILED ("CreateSolidBrush"), ok = FALSE; } if (ok) { LOGBRUSH logbrush; DWORD style_count = 0; const DWORD *style = NULL; /* Create and select pen */ logbrush.lbStyle = BS_SOLID; logbrush.lbColor = fg; logbrush.lbHatch = 0; if ((win32_gc->pen_style & PS_STYLE_MASK) == PS_USERSTYLE) { style_count = win32_gc->pen_num_dashes; style = win32_gc->pen_dashes; } if ((hpen = ExtCreatePen (win32_gc->pen_style, MAX (win32_gc->pen_width, 1), &logbrush, style_count, style)) == NULL) WIN32_GDI_FAILED ("ExtCreatePen"), ok = FALSE; if (ok && SelectObject (win32_gc->hdc, hpen) == NULL) WIN32_GDI_FAILED ("SelectObject"), ok = FALSE; } } if (ok && win32_gc->rop2 != R2_COPYPEN) if (SetROP2 (win32_gc->hdc, win32_gc->rop2) == 0) WIN32_GDI_FAILED ("SetROP2"), ok = FALSE; if (ok && (win32_gc->values_mask & GDK_GC_CLIP_MASK) && win32_gc->hcliprgn != NULL) { if (SelectClipRgn (win32_gc->hdc, win32_gc->hcliprgn) == ERROR) WIN32_API_FAILED ("SelectClipRgn"), ok = FALSE; if (ok && win32_gc->values_mask & (GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN) && OffsetClipRgn (win32_gc->hdc, win32_gc->values_mask & GDK_GC_CLIP_X_ORIGIN ? gc->clip_x_origin : 0, win32_gc->values_mask & GDK_GC_CLIP_Y_ORIGIN ? gc->clip_y_origin : 0) == ERROR) WIN32_API_FAILED ("OffsetClipRgn"), ok = FALSE; } else if (ok) SelectClipRgn (win32_gc->hdc, NULL); GDK_NOTE (GC, (g_print ("gdk_win32_hdc_get: %p (%s): ", win32_gc, _gdk_win32_gcvalues_mask_to_string (usage)), _gdk_win32_print_dc (win32_gc->hdc))); return win32_gc->hdc; } /** * gdk_win32_hdc_release: * @drawable: destination #GdkDrawable * @gc: #GdkGC to use for drawing on @drawable * @usage: mask indicating what properties were set up * * This function deallocates the Windows device context allocated by * gdk_win32_hdc_get(). It should be called with * the same parameters. **/ void gdk_win32_hdc_release (GdkDrawable *drawable, GdkGC *gc, GdkGCValuesMask usage) { GdkGCWin32 *win32_gc = (GdkGCWin32 *) gc; GdkDrawableImplWin32 *impl = NULL; HGDIOBJ hpen = NULL; HGDIOBJ hbr = NULL; GDK_NOTE (GC, g_print ("gdk_win32_hdc_release: %p: %p (%s)\n", win32_gc, win32_gc->hdc, _gdk_win32_gcvalues_mask_to_string (usage))); impl = get_impl_drawable (drawable); if (win32_gc->holdpal != NULL) { gint k; if (!SelectPalette (win32_gc->hdc, win32_gc->holdpal, FALSE)) WIN32_GDI_FAILED ("SelectPalette"); else if ((k = RealizePalette (win32_gc->hdc)) == GDI_ERROR) WIN32_GDI_FAILED ("RealizePalette"); else if (k > 0) GDK_NOTE (COLORMAP, g_print ("gdk_win32_hdc_release: realized %p: %d colors\n", win32_gc->holdpal, k)); win32_gc->holdpal = NULL; } if (usage & LINE_ATTRIBUTES) if ((hpen = GetCurrentObject (win32_gc->hdc, OBJ_PEN)) == NULL) WIN32_GDI_FAILED ("GetCurrentObject"); if (usage & GDK_GC_FOREGROUND) if ((hbr = GetCurrentObject (win32_gc->hdc, OBJ_BRUSH)) == NULL) WIN32_GDI_FAILED ("GetCurrentObject"); GDI_CALL (RestoreDC, (win32_gc->hdc, win32_gc->saved_dc)); _gdk_win32_drawable_release_dc (GDK_DRAWABLE (impl)); if (hpen != NULL) GDI_CALL (DeleteObject, (hpen)); if (hbr != NULL) GDI_CALL (DeleteObject, (hbr)); if (win32_gc->pen_hbrbg != NULL) GDI_CALL (DeleteObject, (win32_gc->pen_hbrbg)); win32_gc->hdc = NULL; } /* This function originally from Jean-Edouard Lachand-Robert, and * available at www.codeguru.com. Simplified for our needs, not sure * how much of the original code left any longer. Now handles just * one-bit deep bitmaps (in Window parlance, ie those that GDK calls * bitmaps (and not pixmaps), with zero pixels being transparent. */ /* _gdk_win32_bitmap_to_hrgn : Create a region from the * "non-transparent" pixels of a bitmap. */ HRGN _gdk_win32_bitmap_to_hrgn (GdkPixmap *pixmap) { HRGN hRgn = NULL; HRGN h; DWORD maxRects; RGNDATA *pData; guchar *bits; gint width, height, bpl; guchar *p; gint x, y; g_assert (GDK_PIXMAP_OBJECT(pixmap)->depth == 1); bits = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl)->bits; width = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl)->width; height = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl)->height; bpl = ((width - 1)/32 + 1)*4; /* For better performances, we will use the ExtCreateRegion() * function to create the region. This function take a RGNDATA * structure on entry. We will add rectangles by amount of * ALLOC_UNIT number in this structure. */ #define ALLOC_UNIT 100 maxRects = ALLOC_UNIT; pData = g_malloc (sizeof (RGNDATAHEADER) + (sizeof (RECT) * maxRects)); pData->rdh.dwSize = sizeof (RGNDATAHEADER); pData->rdh.iType = RDH_RECTANGLES; pData->rdh.nCount = pData->rdh.nRgnSize = 0; SetRect (&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0); for (y = 0; y < height; y++) { /* Scan each bitmap row from left to right*/ p = (guchar *) bits + y * bpl; for (x = 0; x < width; x++) { /* Search for a continuous range of "non transparent pixels"*/ gint x0 = x; while (x < width) { if ((((p[x/8])>>(7-(x%8)))&1) == 0) /* This pixel is "transparent"*/ break; x++; } if (x > x0) { RECT *pr; /* Add the pixels (x0, y) to (x, y+1) as a new rectangle * in the region */ if (pData->rdh.nCount >= maxRects) { maxRects += ALLOC_UNIT; pData = g_realloc (pData, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects)); } pr = (RECT *) &pData->Buffer; SetRect (&pr[pData->rdh.nCount], x0, y, x, y+1); if (x0 < pData->rdh.rcBound.left) pData->rdh.rcBound.left = x0; if (y < pData->rdh.rcBound.top) pData->rdh.rcBound.top = y; if (x > pData->rdh.rcBound.right) pData->rdh.rcBound.right = x; if (y+1 > pData->rdh.rcBound.bottom) pData->rdh.rcBound.bottom = y+1; pData->rdh.nCount++; /* On Windows98, ExtCreateRegion() may fail if the * number of rectangles is too large (ie: > * 4000). Therefore, we have to create the region by * multiple steps. */ if (pData->rdh.nCount == 2000) { HRGN h = ExtCreateRegion (NULL, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), pData); if (hRgn) { CombineRgn(hRgn, hRgn, h, RGN_OR); DeleteObject(h); } else hRgn = h; pData->rdh.nCount = 0; SetRect (&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0); } } } } /* Create or extend the region with the remaining rectangles*/ h = ExtCreateRegion (NULL, sizeof (RGNDATAHEADER) + (sizeof (RECT) * maxRects), pData); if (hRgn) { CombineRgn (hRgn, hRgn, h, RGN_OR); DeleteObject (h); } else hRgn = h; /* Clean up*/ g_free (pData); return hRgn; } HRGN _gdk_win32_cairo_region_to_hrgn (const cairo_region_t *region, gint x_origin, gint y_origin) { HRGN hrgn; RGNDATA *rgndata; RECT *rect; cairo_rectangle_int_t cairo_rect; guint nbytes = sizeof (RGNDATAHEADER) + (sizeof (RECT) * cairo_region_num_rectangles (region)); int i; rgndata = g_malloc (nbytes); rgndata->rdh.dwSize = sizeof (RGNDATAHEADER); rgndata->rdh.iType = RDH_RECTANGLES; rgndata->rdh.nCount = rgndata->rdh.nRgnSize = 0; SetRect (&rgndata->rdh.rcBound, G_MAXLONG, G_MAXLONG, G_MINLONG, G_MINLONG); for (i = 0; i < cairo_region_num_rectangles (region); i++) { rect = ((RECT *) rgndata->Buffer) + rgndata->rdh.nCount++; cairo_region_get_rectangle (region, i, &cairo_rect); rect->left = cairo_rect.x + x_origin; rect->right = cairo_rect.x + cairo_rect.width + x_origin; rect->top = cairo_rect.y + y_origin; rect->bottom = cairo_rect.y + cairo_rect.height + y_origin; if (rect->left < rgndata->rdh.rcBound.left) rgndata->rdh.rcBound.left = rect->left; if (rect->right > rgndata->rdh.rcBound.right) rgndata->rdh.rcBound.right = rect->right; if (rect->top < rgndata->rdh.rcBound.top) rgndata->rdh.rcBound.top = rect->top; if (rect->bottom > rgndata->rdh.rcBound.bottom) rgndata->rdh.rcBound.bottom = rect->bottom; } if ((hrgn = ExtCreateRegion (NULL, nbytes, rgndata)) == NULL) WIN32_API_FAILED ("ExtCreateRegion"); g_free (rgndata); return (hrgn); }