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-rw-r--r--cd/src/gdk/cdgdk.c1713
1 files changed, 1713 insertions, 0 deletions
diff --git a/cd/src/gdk/cdgdk.c b/cd/src/gdk/cdgdk.c
new file mode 100644
index 0000000..b0c8ea8
--- /dev/null
+++ b/cd/src/gdk/cdgdk.c
@@ -0,0 +1,1713 @@
+/** \file
+ * \brief Gdk Base Driver
+ *
+ * See Copyright Notice in cd.h
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <string.h>
+#include <math.h>
+
+#include "cdgdk.h"
+
+#include <gdk/gdk.h>
+
+#define NUM_HATCHES 6
+#define HATCH_WIDTH 8
+#define HATCH_HEIGHT 8
+
+/*
+** 6 predefined patterns to be accessed through cdHatch(
+ CD_HORIZONTAL | CD_VERTICAL | CD_FDIAGONAL | CD_BDIAGONAL |
+ CD_CROSS | CD_DIAGCROSS)
+
+*/
+static char hatches[NUM_HATCHES][8] = {
+ {0x00,0x00,0xFF,0x00,0x00,0x00,0xFF,0x00}, /* HORIZONTAL */
+ {0x22,0x22,0x22,0x22,0x22,0x22,0x22,0x22}, /* VERTICAL */
+ {0x08,0x10,0x20,0x40,0x80,0x01,0x02,0x04}, /* FDIAGONAL */
+ {0x10,0x08,0x04,0x02,0x01,0x80,0x40,0x20}, /* BDIAGONAL */
+ {0x22,0x22,0xFF,0x22,0x22,0x22,0xFF,0x22}, /* CROSS */
+ {0x18,0x18,0x24,0x42,0x81,0x81,0x42,0x24} /* DIAGCROSS */
+};
+
+/******************************************************/
+
+static int gdkStrIsAscii(const char* str)
+{
+ while(*str)
+ {
+ int c = *str;
+ if (c < 0)
+ return 0;
+ str++;
+ }
+ return 1;
+}
+
+static char* gdkStrToUTF8(const char *str, const char* charset, int length)
+{
+ return g_convert(str, length, "UTF-8", charset, NULL, NULL, NULL);
+}
+
+char* cdgdkStrConvertToUTF8(cdCtxCanvas *ctxcanvas, const char* str, int length) /* From CD to GTK/GDK */
+{
+ const char *charset = NULL;
+
+ if (!str || *str == 0)
+ return (char*)str;
+
+ if (g_get_charset(&charset) == TRUE) /* current locale is already UTF-8 */
+ {
+ if (g_utf8_validate(str, -1, NULL))
+ {
+ return (char*)str;
+ }
+ else
+ {
+ ctxcanvas->gdkLastConvertUTF8 = gdkStrToUTF8(str, "ISO8859-1", length); /* if string is not UTF-8, assume ISO8859-1 */
+
+ if (!ctxcanvas->gdkLastConvertUTF8)
+ return (char*)str;
+
+ return ctxcanvas->gdkLastConvertUTF8;
+ }
+ }
+ else
+ {
+ if (gdkStrIsAscii(str) || !charset)
+ {
+ return (char*)str;
+ }
+ else if (charset)
+ {
+ ctxcanvas->gdkLastConvertUTF8 = gdkStrToUTF8(str, charset, length);
+
+ if (!ctxcanvas->gdkLastConvertUTF8)
+ return (char*)str;
+
+ return ctxcanvas->gdkLastConvertUTF8;
+ }
+ }
+ return (char*)str;
+}
+
+static GdkColor cdColorToGdk(unsigned long rgb)
+{
+ GdkColor clrRGB;
+
+ clrRGB.red = cdCOLOR8TO16(cdRed(rgb));
+ clrRGB.green = cdCOLOR8TO16(cdGreen(rgb));
+ clrRGB.blue = cdCOLOR8TO16(cdBlue(rgb));
+
+ return clrRGB;
+}
+
+/******************************************************/
+
+void cdgdkKillCanvas(cdCtxCanvas *ctxcanvas)
+{
+ if (ctxcanvas->canvas->bpp <= 8)
+ {
+ if (ctxcanvas->colormap != gdk_gc_get_colormap(ctxcanvas->gc))
+ g_object_unref(ctxcanvas->colormap);
+ }
+
+ if (ctxcanvas->last_hatch) g_object_unref(ctxcanvas->last_hatch);
+
+ if (ctxcanvas->fontdesc) pango_font_description_free(ctxcanvas->fontdesc);
+ if (ctxcanvas->fontlayout) g_object_unref(ctxcanvas->fontlayout);
+ if (ctxcanvas->fontcontext) g_object_unref(ctxcanvas->fontcontext);
+
+ if (ctxcanvas->new_rgn) gdk_region_destroy(ctxcanvas->new_rgn);
+ if (ctxcanvas->clip_rgn) gdk_region_destroy(ctxcanvas->clip_rgn);
+
+ if (ctxcanvas->last_pattern)
+ {
+ g_object_unref(ctxcanvas->last_pattern_gc);
+ g_object_unref(ctxcanvas->last_pattern);
+ }
+
+ if (ctxcanvas->last_stipple)
+ {
+ g_object_unref(ctxcanvas->last_stipple_gc);
+ g_object_unref(ctxcanvas->last_stipple);
+ }
+
+ g_object_unref(ctxcanvas->gc);
+
+ free(ctxcanvas);
+}
+
+/******************************************************/
+
+static void cdflush(cdCtxCanvas *ctxcanvas)
+{
+ (void)ctxcanvas;
+ gdk_error_trap_push();
+ gdk_flush();
+ gdk_error_trap_pop();
+}
+
+/******************************************************/
+
+static int cdclip(cdCtxCanvas *ctxcanvas, int clip_mode)
+{
+ switch (clip_mode)
+ {
+ case CD_CLIPOFF:
+ gdk_gc_set_clip_region(ctxcanvas->gc, NULL);
+ break;
+ case CD_CLIPAREA:
+ {
+ GdkRectangle rect;
+ rect.x = ctxcanvas->canvas->clip_rect.xmin;
+ rect.y = ctxcanvas->canvas->clip_rect.ymin;
+ rect.width = ctxcanvas->canvas->clip_rect.xmax - ctxcanvas->canvas->clip_rect.xmin;
+ rect.height = ctxcanvas->canvas->clip_rect.ymax - ctxcanvas->canvas->clip_rect.ymin;
+ gdk_gc_set_clip_rectangle(ctxcanvas->gc, &rect);
+ break;
+ }
+ case CD_CLIPPOLYGON:
+ if (ctxcanvas->clip_rgn)
+ gdk_gc_set_clip_region(ctxcanvas->gc, ctxcanvas->clip_rgn);
+ break;
+ case CD_CLIPREGION:
+ if (ctxcanvas->new_rgn)
+ gdk_gc_set_clip_region(ctxcanvas->gc, ctxcanvas->new_rgn);
+ break;
+ }
+
+ return clip_mode;
+}
+
+static void cdcliparea(cdCtxCanvas *ctxcanvas, int xmin, int xmax, int ymin, int ymax)
+{
+ if (ctxcanvas->canvas->clip_mode == CD_CLIPAREA)
+ {
+ ctxcanvas->canvas->clip_rect.xmin = xmin;
+ ctxcanvas->canvas->clip_rect.ymin = ymin;
+ ctxcanvas->canvas->clip_rect.xmax = xmax;
+ ctxcanvas->canvas->clip_rect.ymax = ymax;
+ cdclip(ctxcanvas, CD_CLIPAREA);
+ }
+}
+
+static void cdnewregion(cdCtxCanvas *ctxcanvas)
+{
+ if (ctxcanvas->new_rgn)
+ gdk_region_destroy(ctxcanvas->new_rgn);
+
+ ctxcanvas->new_rgn = gdk_region_new();
+}
+
+static int cdispointinregion(cdCtxCanvas *ctxcanvas, int x, int y)
+{
+ if (!ctxcanvas->new_rgn)
+ return 0;
+
+ if (gdk_region_point_in(ctxcanvas->new_rgn, x, y))
+ return 1;
+
+ return 0;
+}
+
+static void cdoffsetregion(cdCtxCanvas *ctxcanvas, int x, int y)
+{
+ if (!ctxcanvas->new_rgn)
+ return;
+
+ gdk_region_offset(ctxcanvas->new_rgn, x, y);
+}
+
+static void cdgetregionbox(cdCtxCanvas *ctxcanvas, int *xmin, int *xmax, int *ymin, int *ymax)
+{
+ GdkRectangle rect;
+
+ if (!ctxcanvas->new_rgn)
+ return;
+
+ gdk_region_get_clipbox(ctxcanvas->new_rgn, &rect);
+
+ *xmin = rect.x;
+ *xmax = rect.x + rect.width;
+ *ymin = rect.y;
+ *ymax = rect.y + rect.height;
+}
+
+static void sCombineRegion(cdCtxCanvas *ctxcanvas, GdkRegion* rgn)
+{
+ switch(ctxcanvas->canvas->combine_mode)
+ {
+ case CD_UNION:
+ gdk_region_union(ctxcanvas->new_rgn, rgn);
+ break;
+ case CD_INTERSECT:
+ gdk_region_intersect(ctxcanvas->new_rgn, rgn);
+ break;
+ case CD_DIFFERENCE:
+ gdk_region_subtract(ctxcanvas->new_rgn, rgn);
+ break;
+ case CD_NOTINTERSECT:
+ gdk_region_xor(ctxcanvas->new_rgn, rgn);
+ break;
+ }
+
+ gdk_region_destroy(rgn);
+}
+
+/******************************************************/
+
+static int cdwritemode(cdCtxCanvas *ctxcanvas, int write_mode)
+{
+ switch (write_mode)
+ {
+ case CD_REPLACE:
+ gdk_gc_set_function(ctxcanvas->gc, GDK_COPY);
+ break;
+ case CD_XOR:
+ gdk_gc_set_function(ctxcanvas->gc, GDK_XOR);
+ break;
+ case CD_NOT_XOR:
+ gdk_gc_set_function(ctxcanvas->gc, GDK_EQUIV);
+ break;
+ }
+
+ return write_mode;
+}
+
+static int cdinteriorstyle(cdCtxCanvas *ctxcanvas, int style)
+{
+ GdkFill sty = GDK_SOLID;
+
+ switch (style)
+ {
+ case CD_SOLID:
+ sty = GDK_SOLID;
+ break;
+
+ case CD_HATCH :
+ if (!ctxcanvas->last_hatch)
+ return ctxcanvas->canvas->interior_style;
+
+ gdk_gc_set_stipple(ctxcanvas->gc, ctxcanvas->last_hatch);
+
+ if (ctxcanvas->canvas->back_opacity == CD_OPAQUE)
+ sty = GDK_OPAQUE_STIPPLED;
+ else
+ sty = GDK_STIPPLED;
+ break;
+
+ case CD_STIPPLE:
+ gdk_gc_set_stipple(ctxcanvas->gc, ctxcanvas->last_stipple);
+
+ if (ctxcanvas->canvas->back_opacity == CD_OPAQUE)
+ sty = GDK_OPAQUE_STIPPLED;
+ else
+ sty = GDK_STIPPLED;
+ break;
+
+ case CD_PATTERN:
+ gdk_gc_set_tile(ctxcanvas->gc, ctxcanvas->last_pattern);
+ sty = GDK_TILED;
+ break;
+ }
+
+ gdk_gc_set_fill(ctxcanvas->gc, sty);
+
+ return style;
+}
+
+static int cdhatch(cdCtxCanvas *ctxcanvas, int hatch_style)
+{
+ GdkColor fg, bg;
+
+ if (ctxcanvas->last_hatch)
+ g_object_unref(ctxcanvas->last_hatch);
+
+ fg.pixel = 1;
+ bg.pixel = 0;
+
+ ctxcanvas->last_hatch = gdk_pixmap_create_from_data(ctxcanvas->wnd, hatches[hatch_style],
+ HATCH_WIDTH, HATCH_HEIGHT, 1, &fg, &bg);
+
+ cdinteriorstyle(ctxcanvas, CD_HATCH);
+
+ return hatch_style;
+}
+
+static void cdstipple(cdCtxCanvas *ctxcanvas, int w, int h, const unsigned char *data)
+{
+ int x, y;
+
+ if (ctxcanvas->last_stipple == 0 || (ctxcanvas->last_stipple_w != w || ctxcanvas->last_stipple_h != h))
+ {
+ if (ctxcanvas->last_stipple != 0)
+ {
+ g_object_unref(ctxcanvas->last_stipple);
+ g_object_unref(ctxcanvas->last_stipple_gc);
+ }
+
+ ctxcanvas->last_stipple = gdk_pixmap_new(ctxcanvas->wnd, w, h, 1);
+ if (!ctxcanvas->last_stipple)
+ return;
+
+ ctxcanvas->last_stipple_gc = gdk_gc_new((GdkDrawable*)ctxcanvas->last_stipple);
+ ctxcanvas->last_stipple_w = w;
+ ctxcanvas->last_stipple_h = h;
+ }
+
+ for (y = 0; y < h; y++)
+ {
+ for (x = 0; x < w; x++)
+ {
+ GdkColor clr;
+
+ if(data[y*w+x])
+ clr.pixel = 1;
+ else
+ clr.pixel = 0;
+
+ gdk_gc_set_foreground(ctxcanvas->last_stipple_gc, &clr);
+ gdk_draw_point(ctxcanvas->last_stipple, ctxcanvas->last_stipple_gc, x, h-y-1);
+ }
+ }
+
+ cdinteriorstyle(ctxcanvas, CD_STIPPLE);
+}
+
+static void cdpattern(cdCtxCanvas *ctxcanvas, int w, int h, const long int *colors)
+{
+ int x, y;
+ GdkColor color;
+
+ if (ctxcanvas->last_pattern == 0 || (ctxcanvas->last_pattern_w != w || ctxcanvas->last_pattern_h != h))
+ {
+ if (ctxcanvas->last_pattern != 0)
+ {
+ g_object_unref(ctxcanvas->last_pattern);
+ g_object_unref(ctxcanvas->last_pattern_gc);
+ }
+
+ ctxcanvas->last_pattern = gdk_pixmap_new(ctxcanvas->wnd, w, h, ctxcanvas->depth);
+ if (!ctxcanvas->last_pattern)
+ return;
+
+ ctxcanvas->last_pattern_gc = gdk_gc_new((GdkDrawable*)ctxcanvas->last_pattern);
+ ctxcanvas->last_pattern_w = w;
+ ctxcanvas->last_pattern_h = h;
+ }
+
+ for (y = 0; y < h; y++)
+ {
+ for (x = 0; x < w; x++)
+ {
+ color = cdColorToGdk(colors[y*w+x]);
+ gdk_gc_set_rgb_fg_color(ctxcanvas->last_pattern_gc, &color);
+ gdk_draw_point(ctxcanvas->last_pattern, ctxcanvas->last_pattern_gc, x, h-y-1);
+ }
+ }
+
+ cdinteriorstyle(ctxcanvas, CD_PATTERN);
+}
+
+static int cdlinestyle(cdCtxCanvas *ctxcanvas, int style)
+{
+ switch (style)
+ {
+ case CD_CONTINUOUS:
+ ctxcanvas->gcval.line_style = GDK_LINE_SOLID;
+ break;
+ case CD_DASHED:
+ case CD_DOTTED:
+ case CD_DASH_DOT:
+ case CD_DASH_DOT_DOT:
+ {
+ static struct {
+ int size;
+ signed char list[6];
+ } dashes[4] = {
+ { 2, { 6, 2 } },
+ { 2, { 2, 2 } },
+ { 4, { 6, 2, 2, 2 } },
+ { 6, { 6, 2, 2, 2, 2, 2 } }
+ };
+
+ if (ctxcanvas->canvas->back_opacity == CD_OPAQUE)
+ ctxcanvas->gcval.line_style = GDK_LINE_DOUBLE_DASH;
+ else
+ ctxcanvas->gcval.line_style = GDK_LINE_ON_OFF_DASH;
+
+ gdk_gc_set_dashes(ctxcanvas->gc, 0, dashes[style-CD_DASHED].list, dashes[style-CD_DASHED].size);
+ break;
+ }
+ case CD_CUSTOM:
+ {
+ int i;
+ signed char* dash_style = (signed char*)malloc(ctxcanvas->canvas->line_dashes_count);
+ for (i = 0; i < ctxcanvas->canvas->line_dashes_count; i++)
+ dash_style[i] = (char)ctxcanvas->canvas->line_dashes[i];
+
+ if (ctxcanvas->canvas->back_opacity == CD_OPAQUE)
+ ctxcanvas->gcval.line_style = GDK_LINE_DOUBLE_DASH;
+ else
+ ctxcanvas->gcval.line_style = GDK_LINE_ON_OFF_DASH;
+
+ gdk_gc_set_dashes(ctxcanvas->gc, 0, dash_style, ctxcanvas->canvas->line_dashes_count);
+ free(dash_style);
+ break;
+ }
+ }
+
+ gdk_gc_set_values(ctxcanvas->gc, &ctxcanvas->gcval, GDK_GC_LINE_STYLE);
+
+ return style;
+}
+
+static int cdlinewidth(cdCtxCanvas *ctxcanvas, int width)
+{
+ if (width == 1)
+ ctxcanvas->gcval.line_width = 0;
+ else
+ ctxcanvas->gcval.line_width = width;
+
+ gdk_gc_set_values(ctxcanvas->gc, &ctxcanvas->gcval, GDK_GC_LINE_WIDTH);
+
+ return width;
+}
+
+static int cdlinecap(cdCtxCanvas *ctxcanvas, int cap)
+{
+ int cd2x_cap[] = {GDK_CAP_BUTT, GDK_CAP_PROJECTING, GDK_CAP_ROUND};
+
+ ctxcanvas->gcval.cap_style = cd2x_cap[cap];
+ gdk_gc_set_values(ctxcanvas->gc, &ctxcanvas->gcval, GDK_GC_CAP_STYLE);
+
+ return cap;
+}
+
+static int cdlinejoin(cdCtxCanvas *ctxcanvas, int join)
+{
+ int cd2x_join[] = {GDK_JOIN_MITER, GDK_JOIN_BEVEL, GDK_JOIN_ROUND};
+
+ ctxcanvas->gcval.join_style = cd2x_join[join];
+ gdk_gc_set_values(ctxcanvas->gc, &ctxcanvas->gcval, GDK_GC_JOIN_STYLE);
+
+ return join;
+}
+
+static int cdbackopacity(cdCtxCanvas *ctxcanvas, int opaque)
+{
+ ctxcanvas->canvas->back_opacity = opaque;
+ cdinteriorstyle(ctxcanvas, ctxcanvas->canvas->interior_style);
+ cdlinestyle(ctxcanvas, ctxcanvas->canvas->line_style);
+ return opaque;
+}
+
+static int cdfont(cdCtxCanvas *ctxcanvas, const char *typeface, int style, int size)
+{
+ int is_italic = 0, is_bold = 0; /* default is CD_PLAIN */
+ int is_strikeout = 0, is_underline = 0;
+ char font[256];
+ PangoAttrList *attrs;
+
+ if (cdStrEqualNoCase(typeface, "Courier") || cdStrEqualNoCase(typeface, "Courier New"))
+ typeface = "Monospace";
+ else if (cdStrEqualNoCase(typeface, "Times") || cdStrEqualNoCase(typeface, "Times New Roman"))
+ typeface = "Serif";
+ else if (cdStrEqualNoCase(typeface, "Helvetica") || cdStrEqualNoCase(typeface, "Arial"))
+ typeface = "Sans";
+
+ if (style & CD_BOLD)
+ is_bold = 1;
+
+ if (style & CD_ITALIC)
+ is_italic = 1;
+
+ if (style & CD_UNDERLINE)
+ is_underline = 1;
+
+ if (style & CD_STRIKEOUT)
+ is_strikeout = 1;
+
+ if (size < 0)
+ {
+ double res = ((double)gdk_screen_get_width(gdk_screen_get_default()) /
+ (double)gdk_screen_get_width_mm(gdk_screen_get_default())); /* pixels/mm */
+
+ /* 1 point = 1/72 inch 1 inch = 25.4 mm */
+ /* pixel = ((point/72)*25.4)*pixel/mm */
+ size = (int)((-size/res)*2.83464567 + 0.5); /* from pixels to points */
+ }
+
+ sprintf(font, "%s, %s%s%d", typeface, is_bold?"Bold ":"", is_italic?"Italic ":"", size);
+
+ ctxcanvas->fontdesc = pango_font_description_from_string(font);
+
+ if (!ctxcanvas->fontdesc)
+ return 0;
+
+ ctxcanvas->fontlayout = pango_layout_new(ctxcanvas->fontcontext);
+ pango_layout_set_font_description(ctxcanvas->fontlayout, ctxcanvas->fontdesc);
+
+ attrs = pango_attr_list_new();
+ pango_attr_list_insert(attrs, pango_attribute_copy(pango_attr_strikethrough_new(is_strikeout ? TRUE : FALSE)));
+ pango_attr_list_insert(attrs, pango_attribute_copy(pango_attr_underline_new(is_underline ? PANGO_UNDERLINE_SINGLE : PANGO_UNDERLINE_NONE)));
+ pango_layout_set_attributes(ctxcanvas->fontlayout, attrs);
+
+ pango_attr_list_unref(attrs);
+
+ return 1;
+}
+
+static int cdnativefont(cdCtxCanvas *ctxcanvas, const char* nativefont)
+{
+ int size = 12, style = CD_PLAIN;
+ char typeface[1024];
+
+ /* parse the old Windows format first */
+ if (!cdParseIupWinFont(nativefont, typeface, &style, &size))
+ if (!cdParseXWinFont(nativefont, typeface, &style, &size))
+ if (!cdParsePangoFont(nativefont, typeface, &style, &size))
+ return 0;
+
+ if (!cdfont(ctxcanvas, typeface, style, size))
+ return 0;
+
+ /* update cdfont parameters */
+ ctxcanvas->canvas->font_style = style;
+ ctxcanvas->canvas->font_size = size;
+ strcpy(ctxcanvas->canvas->font_type_face, typeface);
+
+ return 1;
+}
+
+static void cdgetfontdim(cdCtxCanvas *ctxcanvas, int *max_width, int *height, int *ascent, int *descent)
+{
+ PangoFontMetrics* metrics;
+ int charwidth, charheight, charascent, chardescent;
+
+ if(!ctxcanvas->fontdesc)
+ return;
+
+ metrics = pango_context_get_metrics(ctxcanvas->fontcontext, ctxcanvas->fontdesc, pango_context_get_language(ctxcanvas->fontcontext));
+ charascent = pango_font_metrics_get_ascent(metrics);
+ chardescent = pango_font_metrics_get_descent(metrics);
+ charheight = charascent + chardescent;
+ charwidth = pango_font_metrics_get_approximate_char_width(metrics);
+
+ if (max_width) *max_width = (((charwidth) + PANGO_SCALE/2) / PANGO_SCALE);
+ if (height) *height = (((charheight) + PANGO_SCALE/2) / PANGO_SCALE);
+ if (ascent) *ascent = (((charascent) + PANGO_SCALE/2) / PANGO_SCALE);
+ if (descent) *descent = (((chardescent) + PANGO_SCALE/2) / PANGO_SCALE);
+
+ pango_font_metrics_unref(metrics);
+}
+
+static long int cdbackground(cdCtxCanvas *ctxcanvas, long int color)
+{
+ ctxcanvas->bg = cdColorToGdk(color);
+ gdk_gc_set_rgb_bg_color(ctxcanvas->gc, &ctxcanvas->bg);
+ return color;
+}
+
+static long int cdforeground(cdCtxCanvas *ctxcanvas, long int color)
+{
+ ctxcanvas->fg = cdColorToGdk(color);
+ gdk_gc_set_rgb_fg_color(ctxcanvas->gc, &ctxcanvas->fg);
+ return color;
+}
+
+static void cdpalette(cdCtxCanvas *ctxcanvas, int n, const long int *palette, int mode)
+{
+ int i;
+ GdkColor clr;
+
+ if (mode == CD_FORCE)
+ {
+ /* if was POLITE then allocates own palette */
+ if (ctxcanvas->colormap == gdk_gc_get_colormap(ctxcanvas->gc))
+ ctxcanvas->colormap = gdk_colormap_new(ctxcanvas->vis, FALSE);
+
+ /* allocate all the palette colors to the CD */
+ for (i = 0; i < n; i++)
+ {
+ clr = cdColorToGdk(palette[i]);
+ gdk_colormap_alloc_color(ctxcanvas->colormap, &clr, FALSE, FALSE);
+ }
+
+ /* set directly on the drawable */
+ gdk_drawable_set_colormap(ctxcanvas->wnd, ctxcanvas->colormap);
+ }
+ else
+ {
+ /* if was FORCE, remove the own palette */
+ if (ctxcanvas->colormap != gdk_gc_get_colormap(ctxcanvas->gc))
+ {
+ g_object_unref(ctxcanvas->colormap);
+ ctxcanvas->colormap = gdk_gc_get_colormap(ctxcanvas->gc);
+ }
+
+ /* if POLITE then just try to allocate all the colors of the palette */
+ for (i = 0; i < n; i++)
+ {
+ clr = cdColorToGdk(palette[i]);
+ gdk_colormap_alloc_color(ctxcanvas->colormap, &clr, FALSE, TRUE);
+ }
+ }
+}
+
+/******************************************************/
+
+static void cdgdkCheckSolidStyle(cdCtxCanvas *ctxcanvas, int set)
+{
+ if (ctxcanvas->canvas->interior_style == CD_SOLID)
+ return;
+
+ if (set)
+ gdk_gc_set_fill(ctxcanvas->gc, GDK_SOLID);
+ else
+ cdinteriorstyle(ctxcanvas, ctxcanvas->canvas->interior_style);
+}
+
+static void cdclear(cdCtxCanvas* ctxcanvas)
+{
+ GdkColor clr;
+
+ cdgdkCheckSolidStyle(ctxcanvas, 1);
+
+ if (ctxcanvas->canvas->clip_mode != CD_CLIPOFF)
+ gdk_gc_set_clip_region(ctxcanvas->gc, NULL);
+
+ clr = cdColorToGdk(ctxcanvas->canvas->background);
+ gdk_gc_set_rgb_fg_color(ctxcanvas->gc, &clr);
+
+ gdk_draw_rectangle(ctxcanvas->wnd, ctxcanvas->gc, TRUE, 0, 0, ctxcanvas->canvas->w, ctxcanvas->canvas->h);
+
+ clr = cdColorToGdk(ctxcanvas->canvas->foreground);
+ gdk_gc_set_rgb_fg_color(ctxcanvas->gc, &clr);
+
+ if (ctxcanvas->canvas->clip_mode != CD_CLIPOFF)
+ cdclip(ctxcanvas, ctxcanvas->canvas->clip_mode);
+
+ cdgdkCheckSolidStyle(ctxcanvas, 0);
+}
+
+static void cdline(cdCtxCanvas *ctxcanvas, int x1, int y1, int x2, int y2)
+{
+ if (ctxcanvas->canvas->use_matrix)
+ {
+ cdMatrixTransformPoint(ctxcanvas->xmatrix, x1, y1, &x1, &y1);
+ cdMatrixTransformPoint(ctxcanvas->xmatrix, x2, y2, &x2, &y2);
+ }
+
+ cdgdkCheckSolidStyle(ctxcanvas, 1);
+ gdk_draw_line(ctxcanvas->wnd, ctxcanvas->gc, x1, y1, x2, y2);
+ cdgdkCheckSolidStyle(ctxcanvas, 0);
+}
+
+static void cdarc(cdCtxCanvas *ctxcanvas, int xc, int yc, int w, int h, double a1, double a2)
+{
+ if (ctxcanvas->canvas->use_matrix)
+ {
+ cdarcSIM(ctxcanvas, xc, yc, w, h, a1, a2);
+ return;
+ }
+
+ cdgdkCheckSolidStyle(ctxcanvas, 1);
+ gdk_draw_arc(ctxcanvas->wnd, ctxcanvas->gc, FALSE, xc-w/2, yc-h/2, w, h, cdRound(a1*64), cdRound((a2 - a1)*64));
+ cdgdkCheckSolidStyle(ctxcanvas, 0);
+}
+
+static void cdsector(cdCtxCanvas *ctxcanvas, int xc, int yc, int w, int h, double a1, double a2)
+{
+ if (ctxcanvas->canvas->use_matrix)
+ {
+ cdsectorSIM(ctxcanvas, xc, yc, w, h, a1, a2);
+ return;
+ }
+
+ if (ctxcanvas->canvas->new_region)
+ {
+ cdsectorSIM(ctxcanvas, xc, yc, w, h, a1, a2);
+ }
+ else
+ {
+ /* "filled parameter = TRUE" produces an 'pie slice' */
+ gdk_draw_arc(ctxcanvas->wnd, ctxcanvas->gc, TRUE, xc-w/2, yc-h/2, w, h, cdRound(a1*64), cdRound((a2 - a1)*64));
+ }
+}
+
+static void cdrect(cdCtxCanvas *ctxcanvas, int xmin, int xmax, int ymin, int ymax)
+{
+ if (ctxcanvas->canvas->use_matrix)
+ {
+ cdrectSIM(ctxcanvas, xmin, xmax, ymin, ymax);
+ return;
+ }
+
+ cdgdkCheckSolidStyle(ctxcanvas, 1);
+ gdk_draw_rectangle(ctxcanvas->wnd, ctxcanvas->gc, FALSE, xmin, ymin, xmax-xmin, ymax-ymin);
+ cdgdkCheckSolidStyle(ctxcanvas, 0);
+}
+
+static void cdbox(cdCtxCanvas *ctxcanvas, int xmin, int xmax, int ymin, int ymax)
+{
+ if (ctxcanvas->canvas->use_matrix)
+ {
+ cdboxSIM(ctxcanvas, xmin, xmax, ymin, ymax);
+ return;
+ }
+
+ if (ctxcanvas->canvas->new_region)
+ {
+ GdkRegion *rgn;
+ GdkRectangle rect;
+
+ rect.x = xmin; rect.width = xmax-xmin;
+ rect.y = ymin; rect.height = ymax-ymin;
+ rgn = gdk_region_rectangle(&rect);
+
+ sCombineRegion(ctxcanvas, rgn);
+ }
+ else
+ gdk_draw_rectangle(ctxcanvas->wnd, ctxcanvas->gc, TRUE, xmin, ymin, xmax-xmin+1, ymax-ymin+1);
+}
+
+static void cdtext(cdCtxCanvas *ctxcanvas, int x, int y, const char *s, int len)
+{
+ PangoFontMetrics* metrics;
+ int w, h, desc, dir = -1;
+ int ox = x, oy = y;
+
+ ctxcanvas->gdkLastConvertUTF8 = cdgdkStrConvertToUTF8(ctxcanvas, s, len);
+ pango_layout_set_text(ctxcanvas->fontlayout, ctxcanvas->gdkLastConvertUTF8, -1);
+
+ pango_layout_get_pixel_size(ctxcanvas->fontlayout, &w, &h);
+ metrics = pango_context_get_metrics(ctxcanvas->fontcontext, ctxcanvas->fontdesc, pango_context_get_language(ctxcanvas->fontcontext));
+ desc = (((pango_font_metrics_get_descent(metrics)) + PANGO_SCALE/2) / PANGO_SCALE);
+
+ switch (ctxcanvas->canvas->text_alignment)
+ {
+ case CD_BASE_RIGHT:
+ case CD_NORTH_EAST:
+ case CD_EAST:
+ case CD_SOUTH_EAST:
+ x = x - w;
+ break;
+ case CD_BASE_CENTER:
+ case CD_CENTER:
+ case CD_NORTH:
+ case CD_SOUTH:
+ x = x - w/2;
+ break;
+ case CD_BASE_LEFT:
+ case CD_NORTH_WEST:
+ case CD_WEST:
+ case CD_SOUTH_WEST:
+ x = x;
+ break;
+ }
+
+ if (ctxcanvas->canvas->invert_yaxis)
+ dir = 1;
+
+ switch (ctxcanvas->canvas->text_alignment)
+ {
+ case CD_BASE_LEFT:
+ case CD_BASE_CENTER:
+ case CD_BASE_RIGHT:
+ y = y - (dir*h - desc);
+ break;
+ case CD_SOUTH_EAST:
+ case CD_SOUTH_WEST:
+ case CD_SOUTH:
+ y = y - (dir*h);
+ break;
+ case CD_NORTH_EAST:
+ case CD_NORTH:
+ case CD_NORTH_WEST:
+ y = y;
+ break;
+ case CD_CENTER:
+ case CD_EAST:
+ case CD_WEST:
+ y = y - (dir*(h/2));
+ break;
+ }
+
+ if(!ctxcanvas->canvas->use_matrix)
+ {
+ ctxcanvas->fontmatrix.xx = 1; ctxcanvas->fontmatrix.xy = 0;
+ ctxcanvas->fontmatrix.yx = 0; ctxcanvas->fontmatrix.yy = 1;
+ ctxcanvas->fontmatrix.x0 = 0; ctxcanvas->fontmatrix.y0 = 0;
+ }
+
+ if (ctxcanvas->canvas->text_orientation != 0)
+ pango_matrix_rotate(&ctxcanvas->fontmatrix, (double)ctxcanvas->canvas->text_orientation);
+
+ if (ctxcanvas->canvas->use_matrix || ctxcanvas->canvas->text_orientation != 0)
+ {
+ PangoRectangle rect;
+ double angle = CD_DEG2RAD*ctxcanvas->canvas->text_orientation;
+ double cos_angle = cos(angle);
+ double sin_angle = sin(angle);
+
+ pango_context_set_matrix (ctxcanvas->fontcontext, &ctxcanvas->fontmatrix);
+ pango_layout_context_changed (ctxcanvas->fontlayout);
+
+ pango_layout_get_pixel_extents(ctxcanvas->fontlayout, NULL, &rect);
+ pango_matrix_transform_pixel_rectangle(&ctxcanvas->fontmatrix, &rect);
+
+ if (ctxcanvas->canvas->text_orientation)
+ cdRotatePoint(ctxcanvas->canvas, x, y, ox, oy, &x, &y, sin_angle, cos_angle);
+
+ if (ctxcanvas->canvas->use_matrix)
+ cdMatrixTransformPoint(ctxcanvas->xmatrix, x, y, &x, &y);
+
+ /* Defines the new position (X,Y), considering the Pango rectangle transformed */
+ x += (int)rect.x;
+ y += (int)rect.y;
+ }
+
+ cdgdkCheckSolidStyle(ctxcanvas, 1);
+
+ if (ctxcanvas->canvas->new_region)
+ {
+ GdkRegion *rgn;
+ gint *idx;
+ gint range;
+
+ pango_layout_line_get_x_ranges(pango_layout_get_line(ctxcanvas->fontlayout, 0), 0, len, &idx, &range);
+
+ /* TODO: this is only the bounding box of the layout, not the text itself,
+ must transform the text into a polygon. */
+ rgn = gdk_pango_layout_get_clip_region(ctxcanvas->fontlayout, x, y, idx, range);
+
+ sCombineRegion(ctxcanvas, rgn);
+ }
+ else
+ gdk_draw_layout(ctxcanvas->wnd, ctxcanvas->gc, x, y, ctxcanvas->fontlayout);
+
+ pango_context_set_matrix(ctxcanvas->fontcontext, NULL);
+
+ cdgdkCheckSolidStyle(ctxcanvas, 0);
+
+ pango_font_metrics_unref(metrics);
+}
+
+static void cdgettextsize(cdCtxCanvas *ctxcanvas, const char *s, int len, int *width, int *height)
+{
+ if (!ctxcanvas->fontlayout)
+ return;
+
+ ctxcanvas->gdkLastConvertUTF8 = cdgdkStrConvertToUTF8(ctxcanvas, s, len);
+ pango_layout_set_text(ctxcanvas->fontlayout, ctxcanvas->gdkLastConvertUTF8, -1);
+ pango_layout_get_pixel_size(ctxcanvas->fontlayout, width, height);
+}
+
+static void cdpoly(cdCtxCanvas *ctxcanvas, int mode, cdPoint* poly, int n)
+{
+ int i;
+
+ if (mode != CD_BEZIER)
+ {
+ for (i = 0; i < n; i++)
+ {
+ if (ctxcanvas->canvas->use_matrix)
+ cdMatrixTransformPoint(ctxcanvas->xmatrix, poly[i].x, poly[i].y, &(poly[i].x), &(poly[i].y));
+ }
+ }
+
+ switch( mode )
+ {
+ case CD_FILL:
+ if (ctxcanvas->canvas->new_region)
+ {
+ GdkRegion* rgn = gdk_region_polygon((GdkPoint*)poly, n, ctxcanvas->canvas->fill_mode == CD_EVENODD ? GDK_EVEN_ODD_RULE : GDK_WINDING_RULE);
+ sCombineRegion(ctxcanvas, rgn);
+ }
+ else
+ gdk_draw_polygon(ctxcanvas->wnd, ctxcanvas->gc, TRUE, (GdkPoint*)poly, n);
+ break;
+
+ case CD_CLOSED_LINES:
+ cdgdkCheckSolidStyle(ctxcanvas, 1);
+ gdk_draw_polygon(ctxcanvas->wnd, ctxcanvas->gc, FALSE, (GdkPoint*)poly, n);
+ cdgdkCheckSolidStyle(ctxcanvas, 0);
+ break;
+
+ case CD_OPEN_LINES:
+ cdgdkCheckSolidStyle(ctxcanvas, 1);
+ gdk_draw_lines(ctxcanvas->wnd, ctxcanvas->gc, (GdkPoint*)poly, n);
+ cdgdkCheckSolidStyle(ctxcanvas, 0);
+ break;
+
+ case CD_CLIP:
+ ctxcanvas->clip_rgn = gdk_region_polygon((GdkPoint*)poly, n, ctxcanvas->canvas->fill_mode == CD_EVENODD ? GDK_EVEN_ODD_RULE : GDK_WINDING_RULE);
+ if (ctxcanvas->canvas->clip_mode == CD_CLIPPOLYGON)
+ cdclip(ctxcanvas, CD_CLIPPOLYGON);
+ break;
+
+ case CD_BEZIER:
+ cdSimPolyBezier(ctxcanvas->canvas, poly, n);
+ break;
+ }
+}
+
+/******************************************************/
+
+static void cdgdkGetPixbufData(GdkPixbuf* pixbuf, unsigned char *r, unsigned char *g, unsigned char *b)
+{
+ int w, h, y, x, bpp;
+ guchar *pixdata, *pixline_data;
+ int rowstride, channels;
+
+ w = gdk_pixbuf_get_width(pixbuf);
+ h = gdk_pixbuf_get_height(pixbuf);
+ bpp = gdk_pixbuf_get_bits_per_sample(pixbuf)*gdk_pixbuf_get_n_channels(pixbuf);
+
+ if (bpp!=24 && bpp!=32)
+ return;
+
+ pixdata = gdk_pixbuf_get_pixels(pixbuf);
+ rowstride = gdk_pixbuf_get_rowstride(pixbuf);
+ channels = gdk_pixbuf_get_n_channels(pixbuf);
+
+ /* planes are separated in imgdata */
+ for (y=0; y<h; y++)
+ {
+ int lineoffset = (h-1 - y)*w; /* imgdata is bottom up */
+ pixline_data = pixdata + y * rowstride;
+ for(x=0;x<w;x++)
+ {
+ int pos = x*channels;
+ r[lineoffset+x] = pixline_data[pos];
+ g[lineoffset+x] = pixline_data[pos+1];
+ b[lineoffset+x] = pixline_data[pos+2];
+ }
+ }
+}
+
+static GdkPixbuf* cdgdkCreatePixbufRGBA(int width, int height, const unsigned char *r, const unsigned char *g, const unsigned char *b, const unsigned char *a, int ix, int iy, int image_width)
+{
+ GdkPixbuf* pixbuf;
+ guchar *pixdata, *pixline_data;
+ int rowstride, channels;
+ int x, y;
+
+ pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, a?TRUE:FALSE, 8, width, height);
+ if (!pixbuf)
+ return NULL;
+
+ pixdata = gdk_pixbuf_get_pixels(pixbuf);
+ rowstride = gdk_pixbuf_get_rowstride(pixbuf);
+ channels = gdk_pixbuf_get_n_channels(pixbuf);
+
+ /* GdkPixbuf is top-bottom */
+ /* imgdata is bottom up */
+
+ /* planes are separated in imgdata */
+ for (y=0; y<height; y++)
+ {
+ int lineoffset = (height-1 - y + iy)*image_width; /* imgdata is bottom up */
+ pixline_data = pixdata + y * rowstride;
+ for(x=0;x<width;x++)
+ {
+ int pos = x*channels;
+ pixline_data[pos] = r[lineoffset+x+ix];
+ pixline_data[pos+1] = g[lineoffset+x+ix];
+ pixline_data[pos+2] = b[lineoffset+x+ix];
+
+ if (a)
+ pixline_data[pos+3] = a[lineoffset+x+ix];
+ }
+ }
+
+ return pixbuf;
+}
+
+static GdkPixbuf* cdgdkCreatePixbufMap(int width, int height, const long* colors, const unsigned char *map, int ix, int iy, int image_width)
+{
+ GdkPixbuf* pixbuf;
+ guchar *pixdata, *pixline_data;
+ int rowstride, channels;
+ const unsigned char *line_data;
+ int x, y;
+
+ pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, width, height);
+ if (!pixbuf)
+ return NULL;
+
+ pixdata = gdk_pixbuf_get_pixels(pixbuf);
+ rowstride = gdk_pixbuf_get_rowstride(pixbuf);
+ channels = gdk_pixbuf_get_n_channels(pixbuf);
+
+ /* GdkPixbuf is top-bottom */
+ /* map is bottom up */
+
+ for (y=0; y<height; y++)
+ {
+ pixline_data = pixdata + y * rowstride;
+ line_data = map + (height-1 - y + iy) * image_width; /* map is bottom up */
+
+ for (x=0; x<width; x++)
+ {
+ unsigned char index = line_data[x+ix];
+ long c = colors[index];
+ guchar *r = &pixline_data[channels*x],
+ *g = r+1,
+ *b = g+1;
+
+ *r = cdRed(c);
+ *g = cdGreen(c);
+ *b = cdBlue(c);
+ }
+ }
+
+ return pixbuf;
+}
+
+static void cdgetimagergb(cdCtxCanvas *ctxcanvas, unsigned char *r, unsigned char *g, unsigned char *b, int x, int y, int w, int h)
+{
+ GdkPixbuf* pixbuf = gdk_pixbuf_get_from_drawable(NULL, ctxcanvas->wnd, ctxcanvas->colormap,
+ x, y-h+1,
+ 0, 0, w, h);
+ if (!pixbuf)
+ {
+ fprintf(stderr, "CanvasDraw: error getting image\n");
+ return;
+ }
+
+ cdgdkGetPixbufData(pixbuf, r, g, b);
+}
+
+static void cdputimagerectrgba_matrix(cdCtxCanvas* ctxcanvas, int iw, int ih, const unsigned char *r, const unsigned char *g, const unsigned char *b, const unsigned char *a, int x, int y, int w, int h, int xmin, int xmax, int ymin, int ymax)
+{
+ int t_xmin, t_xmax, t_ymin, t_ymax, ew, eh,
+ t_x, t_y, dst_offset, size, nc, doff, rect[8];
+ float i_x, i_y, xfactor, yfactor;
+ unsigned char *dst_r, *dst_g, *dst_b, *dst_a = NULL;
+ double inv_matrix[6];
+
+ /* calculate the destination limits */
+ cdImageRGBCalcDstLimits(ctxcanvas->canvas, x, y, w, h, &t_xmin, &t_xmax, &t_ymin, &t_ymax, rect);
+
+ /* Setup inverse transform (use the original transform here, NOT ctxcanvas->xmatrix) */
+ cdImageRGBInitInverseTransform(w, h, xmin, xmax, ymin, ymax, &xfactor, &yfactor, ctxcanvas->canvas->matrix, inv_matrix);
+
+ /* create an image for the destination area */
+ ew = (t_xmax-t_xmin+1);
+ eh = (t_ymax-t_ymin+1);
+ size = ew*eh;
+ nc = 3;
+ if (a) nc = 4;
+ dst_r = malloc(nc*size);
+ if (!dst_r)
+ {
+ fprintf(stderr, "CanvasDraw: no enough memory\n");
+ return;
+ }
+ dst_g = dst_r + size;
+ dst_b = dst_g + size;
+ if (a) dst_a = dst_b + size;
+ memset(dst_r, 0, nc*size);
+
+ /* for all pixels in the destiny area */
+ for(t_y = t_ymin; t_y <= t_ymax; t_y++)
+ {
+ dst_offset = (t_y-t_ymin) * ew;
+
+ for(t_x = t_xmin; t_x <= t_xmax; t_x++)
+ {
+ cdImageRGBInverseTransform(t_x, t_y, &i_x, &i_y, xfactor, yfactor, xmin, ymin, x, y, inv_matrix);
+
+ if (i_x > xmin && i_y > ymin && i_x < xmax+1 && i_y < ymax+1)
+ {
+ doff = (t_x-t_xmin) + dst_offset;
+ *(dst_r+doff) = cdBilinearInterpolation(iw, ih, r, i_x, i_y);
+ *(dst_g+doff) = cdBilinearInterpolation(iw, ih, g, i_x, i_y);
+ *(dst_b+doff) = cdBilinearInterpolation(iw, ih, b, i_x, i_y);
+ if (a) *(dst_a+doff) = cdBilinearInterpolation(iw, ih, a, i_x, i_y);
+ }
+ }
+ }
+
+ {
+ int ex = t_xmin,
+ ey = t_ymin + eh-1; /* GdkPixbuf origin is at top-left */
+ GdkPixbuf *pixbuf;
+ GdkRegion *clip_polygon;
+ GdkPoint* pnt = g_malloc(64);
+
+ /* Since the transformation used was the original transformation, */
+ /* must invert the Y axis here. */
+ ey = _cdInvertYAxis(ctxcanvas->canvas, ey);
+
+ /* use clipping to select only the transformed rectangle */
+ pnt[0].x = (short)rect[0]; pnt[0].y = (short)_cdInvertYAxis(ctxcanvas->canvas, rect[1]);
+ pnt[1].x = (short)rect[2]; pnt[1].y = (short)_cdInvertYAxis(ctxcanvas->canvas, rect[3]);
+ pnt[2].x = (short)rect[4]; pnt[2].y = (short)_cdInvertYAxis(ctxcanvas->canvas, rect[5]);
+ pnt[3].x = (short)rect[6]; pnt[3].y = (short)_cdInvertYAxis(ctxcanvas->canvas, rect[7]);
+ clip_polygon = gdk_region_polygon(pnt, 4, ctxcanvas->canvas->fill_mode == CD_EVENODD ? GDK_EVEN_ODD_RULE : GDK_WINDING_RULE);
+
+ /* combine with the existing clipping */
+ gdk_gc_set_function(ctxcanvas->gc, GDK_AND);
+ gdk_gc_set_clip_region(ctxcanvas->gc, clip_polygon);
+
+ cdwritemode(ctxcanvas, ctxcanvas->canvas->write_mode); /* reset gdk_gc_set_function */
+
+ pixbuf = cdgdkCreatePixbufRGBA(ew, eh, dst_r, dst_g, dst_b, dst_a, 0, 0, ew);
+ if (!pixbuf)
+ return;
+
+ gdk_draw_pixbuf(ctxcanvas->wnd, ctxcanvas->gc, pixbuf, 0, 0, ex, ey, -1, -1, ctxcanvas->img_dither, 0, 0);
+
+ /* reset clipping */
+ gdk_region_destroy(clip_polygon);
+ cdclip(ctxcanvas, ctxcanvas->canvas->clip_mode);
+
+ g_object_unref(pixbuf);
+ g_free(pnt);
+ }
+
+ free(dst_r);
+}
+
+static void cdputimagerectmap_matrix(cdCtxCanvas* ctxcanvas, int iw, int ih, const unsigned char *index, const long int *colors, int x, int y, int w, int h, int xmin, int xmax, int ymin, int ymax)
+{
+ int t_xmin, t_xmax, t_ymin, t_ymax, ew, eh,
+ t_x, t_y, dst_offset, size, doff, rect[8];
+ float i_x, i_y, xfactor, yfactor;
+ unsigned char *dst_index;
+ double inv_matrix[6];
+
+ /* calculate the destination limits */
+ cdImageRGBCalcDstLimits(ctxcanvas->canvas, x, y, w, h, &t_xmin, &t_xmax, &t_ymin, &t_ymax, rect);
+
+ /* Setup inverse transform (use the original transform here, NOT ctxcanvas->xmatrix) */
+ cdImageRGBInitInverseTransform(w, h, xmin, xmax, ymin, ymax, &xfactor, &yfactor, ctxcanvas->canvas->matrix, inv_matrix);
+
+ /* create an image for the destination area */
+ ew = (t_xmax-t_xmin+1);
+ eh = (t_ymax-t_ymin+1);
+ size = ew*eh;
+ dst_index = malloc(size);
+ if (!dst_index)
+ {
+ fprintf(stderr, "CanvasDraw: no enough memory\n");
+ return;
+ }
+ memset(dst_index, 0, size);
+
+ /* for all pixels in the destiny area */
+ for(t_y = t_ymin; t_y <= t_ymax; t_y++)
+ {
+ dst_offset = (t_y-t_ymin) * ew;
+
+ for(t_x = t_xmin; t_x <= t_xmax; t_x++)
+ {
+ cdImageRGBInverseTransform(t_x, t_y, &i_x, &i_y, xfactor, yfactor, xmin, ymin, x, y, inv_matrix);
+
+ if (i_x > xmin && i_y > ymin && i_x < xmax+1 && i_y < ymax+1)
+ {
+ doff = (t_x-t_xmin) + dst_offset;
+ *(dst_index+doff) = cdZeroOrderInterpolation(iw, ih, index, i_x, i_y);
+ }
+ }
+ }
+
+ {
+ int ex = t_xmin,
+ ey = t_ymin + eh-1; /* GdkPixbuf* origin is at top-left */
+
+ GdkPixbuf *pixbuf;
+ GdkRegion *clip_polygon;
+ GdkPoint pnt[4];
+
+ /* Since the transformation used was the original transformation, */
+ /* must invert the Y axis here. */
+ ey = _cdInvertYAxis(ctxcanvas->canvas, ey);
+
+ /* use clipping to select only the transformed rectangle */
+ pnt[0].x = (short)rect[0]; pnt[0].y = (short)_cdInvertYAxis(ctxcanvas->canvas, rect[1]);
+ pnt[1].x = (short)rect[2]; pnt[1].y = (short)_cdInvertYAxis(ctxcanvas->canvas, rect[3]);
+ pnt[2].x = (short)rect[4]; pnt[2].y = (short)_cdInvertYAxis(ctxcanvas->canvas, rect[5]);
+ pnt[3].x = (short)rect[6]; pnt[3].y = (short)_cdInvertYAxis(ctxcanvas->canvas, rect[7]);
+ clip_polygon = gdk_region_polygon(pnt, 4, ctxcanvas->canvas->fill_mode == CD_EVENODD ? GDK_EVEN_ODD_RULE : GDK_WINDING_RULE);
+
+ /* combine with the existing clipping */
+ gdk_gc_set_function(ctxcanvas->gc, GDK_AND);
+ gdk_gc_set_clip_region(ctxcanvas->gc, clip_polygon);
+
+ cdwritemode(ctxcanvas, ctxcanvas->canvas->write_mode); /* reset gdk_gc_set_function */
+
+ pixbuf = cdgdkCreatePixbufMap(ew, eh, colors, dst_index, 0, 0, ew);
+ if (!pixbuf)
+ return;
+
+ gdk_draw_pixbuf(ctxcanvas->wnd, ctxcanvas->gc, pixbuf, 0, 0, ex, ey, -1, -1, ctxcanvas->img_dither, 0, 0);
+
+ /* reset clipping */
+ gdk_region_destroy(clip_polygon);
+ cdclip(ctxcanvas, ctxcanvas->canvas->clip_mode);
+
+ g_object_unref(pixbuf);
+ }
+
+ free(dst_index);
+}
+
+static void cdputimagerectrgb(cdCtxCanvas *ctxcanvas, int iw, int ih, const unsigned char *r, const unsigned char *g, const unsigned char *b, int x, int y, int w, int h, int xmin, int xmax, int ymin, int ymax)
+{
+ int ew = w, eh = h, ex = x, ey = y;
+ int bw = iw, bh = ih, bx = 0, by = 0;
+ int rw, rh;
+ GdkPixbuf* pixbuf;
+
+ if (ctxcanvas->canvas->use_matrix)
+ {
+ cdputimagerectrgba_matrix(ctxcanvas, iw, ih, r, g, b, NULL, x, y, w, h, xmin, xmax, ymin, ymax);
+ return;
+ }
+
+ rw = xmax-xmin+1;
+ rh = ymax-ymin+1;
+ y -= (h - 1); /* GdkPixbuf origin is at top-left */
+
+ if (!cdCalcZoom(ctxcanvas->canvas->w, x, w, &ex, &ew, xmin, rw, &bx, &bw, 1))
+ return;
+
+ if (!cdCalcZoom(ctxcanvas->canvas->h, y, h, &ey, &eh, ymin, rh, &by, &bh, 0))
+ return;
+
+ pixbuf = cdgdkCreatePixbufRGBA(bw, bh, r, g, b, NULL, bx, by, iw);
+ if (!pixbuf)
+ return;
+
+ if (bw!=ew || bh!=eh)
+ {
+ GdkPixbuf *pixbuf_scaled = gdk_pixbuf_scale_simple(pixbuf, ew, eh, ctxcanvas->img_interp);
+ gdk_draw_pixbuf(ctxcanvas->wnd, ctxcanvas->gc, pixbuf_scaled, 0, 0, ex, ey, -1, -1, ctxcanvas->img_dither, 0, 0);
+ g_object_unref(pixbuf_scaled);
+ }
+ else
+ gdk_draw_pixbuf(ctxcanvas->wnd, ctxcanvas->gc, pixbuf, 0, 0, ex, ey, -1, -1, ctxcanvas->img_dither, 0, 0);
+
+ g_object_unref(pixbuf);
+}
+
+static void cdputimagerectrgba(cdCtxCanvas *ctxcanvas, int iw, int ih, const unsigned char *r, const unsigned char *g, const unsigned char *b, const unsigned char *a, int x, int y, int w, int h, int xmin, int xmax, int ymin, int ymax)
+{
+ GdkPixbuf *pixbuf;
+ int ew = w, eh = h, ex = x, ey = y;
+ int bw = iw, bh = ih, bx = 0, by = 0;
+ int rw, rh;
+
+ if (ctxcanvas->canvas->use_matrix)
+ {
+ cdputimagerectrgba_matrix(ctxcanvas, iw, ih, r, g, b, a, x, y, w, h, xmin, xmax, ymin, ymax);
+ return;
+ }
+
+ rw = xmax-xmin+1;
+ rh = ymax-ymin+1;
+ y -= (h - 1); /* GdkPixbuf origin is at top-left */
+
+ if (!cdCalcZoom(ctxcanvas->canvas->w, x, w, &ex, &ew, xmin, rw, &bx, &bw, 1))
+ return;
+
+ if (!cdCalcZoom(ctxcanvas->canvas->h, y, h, &ey, &eh, ymin, rh, &by, &bh, 0))
+ return;
+
+ pixbuf = cdgdkCreatePixbufRGBA(bw, bh, r, g, b, a, bx, by, iw);
+ if (!pixbuf)
+ return;
+
+ if (bw!=ew || bh!=eh)
+ {
+ GdkPixbuf *pixbuf_scaled = gdk_pixbuf_scale_simple(pixbuf, ew, eh, ctxcanvas->img_interp);
+ gdk_draw_pixbuf(ctxcanvas->wnd, ctxcanvas->gc, pixbuf_scaled, 0, 0, ex, ey, -1, -1, ctxcanvas->img_dither, 0, 0);
+ g_object_unref(pixbuf_scaled);
+ }
+ else
+ gdk_draw_pixbuf(ctxcanvas->wnd, ctxcanvas->gc, pixbuf, 0, 0, ex, ey, -1, -1, ctxcanvas->img_dither, 0, 0);
+
+ g_object_unref(pixbuf);
+}
+
+static void cdputimagerectmap(cdCtxCanvas *ctxcanvas, int iw, int ih, const unsigned char *index, const long int *colors, int x, int y, int w, int h, int xmin, int xmax, int ymin, int ymax)
+{
+ int ew = w, eh = h, ex = x, ey = y;
+ int bw = iw, bh = ih, bx = 0, by = 0;
+ int rw, rh;
+ GdkPixbuf* pixbuf;
+
+ if (ctxcanvas->canvas->use_matrix)
+ {
+ cdputimagerectmap_matrix(ctxcanvas, iw, ih, index, colors, x, y, w, h, xmin, xmax, ymin, ymax);
+ return;
+ }
+
+ rw = xmax-xmin+1;
+ rh = ymax-ymin+1;
+ y -= (h - 1); /* GdkPixbuf origin is at top-left */
+
+ if (!cdCalcZoom(ctxcanvas->canvas->w, x, w, &ex, &ew, xmin, rw, &bx, &bw, 1))
+ return;
+
+ if (!cdCalcZoom(ctxcanvas->canvas->h, y, h, &ey, &eh, ymin, rh, &by, &bh, 0))
+ return;
+
+ pixbuf = cdgdkCreatePixbufMap(bw, bh, colors, index, bx, by, iw);
+ if (!pixbuf)
+ return;
+
+ if (bw!=ew || bh!=eh)
+ {
+ GdkPixbuf *pixbuf_scaled = gdk_pixbuf_scale_simple(pixbuf, ew, eh, ctxcanvas->img_interp);
+ gdk_draw_pixbuf(ctxcanvas->wnd, ctxcanvas->gc, pixbuf_scaled, 0, 0, ex, ey, -1, -1, ctxcanvas->img_dither, 0, 0);
+ g_object_unref(pixbuf_scaled);
+ }
+ else
+ gdk_draw_pixbuf(ctxcanvas->wnd, ctxcanvas->gc, pixbuf, 0, 0, ex, ey, -1, -1, ctxcanvas->img_dither, 0, 0);
+
+ g_object_unref(pixbuf);
+}
+
+static void cdpixel(cdCtxCanvas *ctxcanvas, int x, int y, long int color)
+{
+ if (ctxcanvas->canvas->foreground != color)
+ {
+ GdkColor clr = cdColorToGdk(color);
+ gdk_gc_set_rgb_fg_color(ctxcanvas->gc, &clr);
+ }
+
+ if (ctxcanvas->canvas->use_matrix)
+ cdMatrixTransformPoint(ctxcanvas->xmatrix, x, y, &x, &y);
+
+ /* Draw pixel */
+ gdk_draw_point(ctxcanvas->wnd, ctxcanvas->gc, x, y);
+
+ if (ctxcanvas->canvas->foreground != color)
+ gdk_gc_set_rgb_fg_color(ctxcanvas->gc, &ctxcanvas->fg);
+}
+
+static cdCtxImage *cdcreateimage (cdCtxCanvas *ctxcanvas, int w, int h)
+{
+ GdkGC* gc;
+ cdCtxImage *ctximage = (cdCtxImage *)malloc(sizeof(cdCtxImage));
+ GdkColor clr;
+
+ ctximage->w = w;
+ ctximage->h = h;
+ ctximage->depth = ctxcanvas->depth;
+ ctximage->scr = ctxcanvas->scr;
+ ctximage->vis = ctxcanvas->vis;
+
+ ctximage->img = gdk_pixmap_new(ctxcanvas->wnd, w, h, ctxcanvas->depth);
+
+ if (!ctximage->img)
+ {
+ free(ctximage);
+ return (void *)0;
+ }
+
+ gc = gdk_gc_new(ctximage->img);
+
+ clr = cdColorToGdk(CD_WHITE);
+
+ gdk_gc_set_rgb_fg_color(gc, &clr);
+ gdk_draw_rectangle(ctximage->img, gc, TRUE, 0, 0, ctximage->w, ctxcanvas->canvas->h);
+
+ g_object_unref(gc);
+
+ return (void*)ctximage;
+}
+
+static void cdgetimage (cdCtxCanvas *ctxcanvas, cdCtxImage *ctximage, int x, int y)
+{
+ gdk_draw_drawable(ctximage->img, ctxcanvas->gc,
+ ctxcanvas->wnd, x, y - ctximage->h+1, 0, 0,
+ ctximage->w, ctximage->h);
+}
+
+static void cdputimagerect (cdCtxCanvas *ctxcanvas, cdCtxImage *ctximage, int x, int y, int xmin, int xmax, int ymin, int ymax)
+{
+ gdk_draw_drawable(ctxcanvas->wnd, ctxcanvas->gc,
+ ctximage->img, xmin, ctximage->h-ymax-1, x, y-(ymax-ymin+1)+1,
+ xmax-xmin+1, ymax-ymin+1);
+}
+
+static void cdkillimage (cdCtxImage *ctximage)
+{
+ g_object_unref(ctximage->img);
+ free(ctximage);
+}
+
+static void cdscrollarea (cdCtxCanvas *ctxcanvas, int xmin, int xmax, int ymin, int ymax, int dx, int dy)
+{
+ gdk_draw_drawable(ctxcanvas->wnd, ctxcanvas->gc,
+ ctxcanvas->wnd, xmin, ymin, xmin+dx, ymin+dy,
+ xmax-xmin+1, ymax-ymin+1);
+}
+
+static void cdtransform(cdCtxCanvas *ctxcanvas, const double* matrix)
+{
+ if (matrix)
+ {
+ PangoMatrix tmpMtx = PANGO_MATRIX_INIT;
+
+ /* configure a bottom-up coordinate system */
+ ctxcanvas->xmatrix[0] = 1;
+ ctxcanvas->xmatrix[1] = 0;
+ ctxcanvas->xmatrix[2] = 0;
+ ctxcanvas->xmatrix[3] = -1;
+ ctxcanvas->xmatrix[4] = 0;
+ ctxcanvas->xmatrix[5] = (ctxcanvas->canvas->h-1);
+ cdMatrixMultiply(matrix, ctxcanvas->xmatrix);
+
+ /* Pango Matrix Transform */
+ ctxcanvas->fontmatrix.xx = matrix[0] * tmpMtx.xx + matrix[1] * tmpMtx.xy;
+ ctxcanvas->fontmatrix.xy = matrix[0] * tmpMtx.yx + matrix[1] * tmpMtx.yy;
+ ctxcanvas->fontmatrix.yx = matrix[2] * tmpMtx.xx + matrix[3] * tmpMtx.xy;
+ ctxcanvas->fontmatrix.yy = matrix[2] * tmpMtx.yx + matrix[3] * tmpMtx.yy;
+ ctxcanvas->fontmatrix.x0 = 0;
+ ctxcanvas->fontmatrix.y0 = 0;
+
+ ctxcanvas->canvas->invert_yaxis = 0;
+ }
+ else
+ {
+ ctxcanvas->canvas->invert_yaxis = 1;
+ }
+}
+
+/******************************************************************/
+
+static void set_rotate_attrib(cdCtxCanvas* ctxcanvas, char* data)
+{
+ if (data)
+ {
+ sscanf(data, "%g %d %d", &ctxcanvas->rotate_angle,
+ &ctxcanvas->rotate_center_x,
+ &ctxcanvas->rotate_center_y);
+
+ cdCanvasTransformTranslate(ctxcanvas->canvas, ctxcanvas->rotate_center_x, ctxcanvas->rotate_center_y);
+ cdCanvasTransformRotate(ctxcanvas->canvas, ctxcanvas->rotate_angle);
+ cdCanvasTransformTranslate(ctxcanvas->canvas, -ctxcanvas->rotate_center_x, -ctxcanvas->rotate_center_y);
+ }
+ else
+ {
+ ctxcanvas->rotate_angle = 0;
+ ctxcanvas->rotate_center_x = 0;
+ ctxcanvas->rotate_center_y = 0;
+
+ cdCanvasTransform(ctxcanvas->canvas, NULL);
+ }
+}
+
+static char* get_rotate_attrib(cdCtxCanvas* ctxcanvas)
+{
+ static char data[100];
+
+ if (!ctxcanvas->rotate_angle)
+ return NULL;
+
+ sprintf(data, "%g %d %d", (double)ctxcanvas->rotate_angle,
+ ctxcanvas->rotate_center_x,
+ ctxcanvas->rotate_center_y);
+
+ return data;
+}
+
+static cdAttribute rotate_attrib =
+{
+ "ROTATE",
+ set_rotate_attrib,
+ get_rotate_attrib
+};
+
+static void set_imgdither_attrib(cdCtxCanvas* ctxcanvas, char* data)
+{
+ if (data && cdStrEqualNoCase(data, "NORMAL"))
+ ctxcanvas->img_dither = GDK_RGB_DITHER_NORMAL;
+ else
+ ctxcanvas->img_dither = GDK_RGB_DITHER_NONE;
+}
+
+static char* get_imgdither_attrib(cdCtxCanvas* ctxcanvas)
+{
+ if (ctxcanvas->img_dither)
+ return "NORMAL";
+ else
+ return "NONE";
+}
+
+static cdAttribute imgdither_attrib =
+{
+ "IMGDITHER",
+ set_imgdither_attrib,
+ get_imgdither_attrib
+};
+
+static void set_interp_attrib(cdCtxCanvas* ctxcanvas, char* data)
+{
+ if (data && cdStrEqualNoCase(data, "BILINEAR"))
+ ctxcanvas->img_interp = GDK_INTERP_BILINEAR;
+ else
+ ctxcanvas->img_interp = GDK_INTERP_NEAREST;
+}
+
+static char* get_interp_attrib(cdCtxCanvas* ctxcanvas)
+{
+ if (ctxcanvas->img_interp)
+ return "BILINEAR";
+ else
+ return "NEAREST";
+}
+
+static cdAttribute interp_attrib =
+{
+ "IMGINTERP",
+ set_interp_attrib,
+ get_interp_attrib
+};
+
+static char* get_gc_attrib(cdCtxCanvas *ctxcanvas)
+{
+ return (char*)ctxcanvas->gc;
+}
+
+static cdAttribute gc_attrib =
+{
+ "GC",
+ NULL,
+ get_gc_attrib
+};
+
+static char* get_pangoversion_attrib(cdCtxCanvas* ctxcanvas)
+{
+ (void)ctxcanvas;
+ return (char*)pango_version_string();
+}
+
+static cdAttribute pangoversion_attrib =
+{
+ "PANGOVERSION",
+ NULL,
+ get_pangoversion_attrib
+};
+
+cdCtxCanvas *cdgdkCreateCanvas(cdCanvas* canvas, GdkDrawable* wnd, GdkScreen* scr, GdkVisual* vis)
+{
+ cdCtxCanvas *ctxcanvas = (cdCtxCanvas *)malloc(sizeof(cdCtxCanvas));
+ memset(ctxcanvas, 0, sizeof(cdCtxCanvas));
+
+ ctxcanvas->scr = scr;
+ ctxcanvas->vis = vis;
+ ctxcanvas->wnd = wnd;
+
+ ctxcanvas->gc = gdk_gc_new(wnd);
+
+ if (!ctxcanvas->gc)
+ {
+ free(canvas);
+ return NULL;
+ }
+
+ ctxcanvas->fontcontext = gdk_pango_context_get();
+ pango_context_set_language(ctxcanvas->fontcontext, pango_language_get_default());
+ ctxcanvas->gdkLastConvertUTF8 = NULL;
+
+ ctxcanvas->canvas = canvas;
+ canvas->ctxcanvas = ctxcanvas;
+
+ gdk_drawable_get_size(wnd, &ctxcanvas->canvas->w, &ctxcanvas->canvas->h);
+ ctxcanvas->depth = gdk_drawable_get_depth(wnd);
+
+ canvas->bpp = ctxcanvas->depth;
+ canvas->xres = ((double)gdk_screen_get_width(scr) / (double)gdk_screen_get_width_mm(scr));
+ canvas->yres = ((double)gdk_screen_get_height(scr) / (double)gdk_screen_get_height_mm(scr));
+ canvas->w_mm = ((double)canvas->w) / canvas->xres;
+ canvas->h_mm = ((double)canvas->h) / canvas->yres;
+ canvas->invert_yaxis = 1;
+
+ if (canvas->bpp <= 8)
+ {
+ ctxcanvas->colormap = gdk_gc_get_colormap(ctxcanvas->gc);
+ if (!ctxcanvas->colormap)
+ {
+ ctxcanvas->colormap = gdk_colormap_get_system();
+ gdk_gc_set_colormap(ctxcanvas->gc, ctxcanvas->colormap);
+ }
+ ctxcanvas->num_colors = ctxcanvas->colormap->size;
+ }
+
+ cdRegisterAttribute(canvas, &gc_attrib);
+ cdRegisterAttribute(canvas, &rotate_attrib);
+ cdRegisterAttribute(canvas, &pangoversion_attrib);
+ cdRegisterAttribute(canvas, &imgdither_attrib);
+ cdRegisterAttribute(canvas, &interp_attrib);
+
+ return ctxcanvas;
+}
+
+void cdgdkInitTable(cdCanvas* canvas)
+{
+ canvas->cxFlush = cdflush;
+ canvas->cxClear = cdclear;
+
+ canvas->cxPixel = cdpixel;
+ canvas->cxLine = cdline;
+ canvas->cxPoly = cdpoly;
+ canvas->cxRect = cdrect;
+ canvas->cxBox = cdbox;
+ canvas->cxArc = cdarc;
+ canvas->cxSector = cdsector;
+ canvas->cxChord = cdchordSIM;
+ canvas->cxText = cdtext;
+
+ canvas->cxNewRegion = cdnewregion;
+ canvas->cxIsPointInRegion = cdispointinregion;
+ canvas->cxOffsetRegion = cdoffsetregion;
+ canvas->cxGetRegionBox = cdgetregionbox;
+ canvas->cxClip = cdclip;
+ canvas->cxClipArea = cdcliparea;
+ canvas->cxWriteMode = cdwritemode;
+ canvas->cxLineStyle = cdlinestyle;
+ canvas->cxLineWidth = cdlinewidth;
+ canvas->cxLineCap = cdlinecap;
+ canvas->cxLineJoin = cdlinejoin;
+ canvas->cxBackOpacity = cdbackopacity;
+ canvas->cxInteriorStyle = cdinteriorstyle;
+ canvas->cxHatch = cdhatch;
+ canvas->cxStipple = cdstipple;
+ canvas->cxPattern = cdpattern;
+ canvas->cxFont = cdfont;
+ canvas->cxNativeFont = cdnativefont;
+ canvas->cxGetFontDim = cdgetfontdim;
+ canvas->cxGetTextSize = cdgettextsize;
+ canvas->cxPalette = cdpalette;
+ canvas->cxBackground = cdbackground;
+ canvas->cxForeground = cdforeground;
+ canvas->cxTransform = cdtransform;
+
+ canvas->cxScrollArea = cdscrollarea;
+ canvas->cxCreateImage = cdcreateimage;
+ canvas->cxGetImage = cdgetimage;
+ canvas->cxPutImageRect = cdputimagerect;
+ canvas->cxKillImage = cdkillimage;
+
+ canvas->cxGetImageRGB = cdgetimagergb;
+ canvas->cxPutImageRectRGB = cdputimagerectrgb;
+ canvas->cxPutImageRectMap = cdputimagerectmap;
+ canvas->cxPutImageRectRGBA = cdputimagerectrgba;
+}
+
+int cdBaseDriver(void)
+{
+ return CD_BASE_GDK;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-22 05:30:04 +0000