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diff --git a/html/download/simple.c b/html/download/simple.c
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+/*
+
+ Simple Draw Application
+
+ Shows the same picture on several canvas. Used to quick test the CD library and
+ to demonstrate the use of CD library functions.
+
+ This module uses only the CD library, there is another module to initialize the Window and its menus.
+
+*/
+
+
+#include "cd.h"
+#include "cdnative.h"
+#include "cdcgm.h"
+#include "cddgn.h"
+#include "cddxf.h"
+#include "cdclipbd.h"
+#include "cdemf.h"
+#include "cdimage.h"
+#include "cdirgb.h"
+#include "cdmf.h"
+#include "cdprint.h"
+#include "cdps.h"
+#include "cdwmf.h"
+
+#include "simple.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <memory.h>
+#include <string.h>
+
+/* A small pattern and stipple size */
+#define SIZE 20
+
+/* Global variables */
+
+cdCanvas *myCanvas = NULL; /* The window drawing canvas */
+cdContext* simple_drv = NULL; /* The window driver */
+char* simple_data = NULL; /* The window driver data */
+
+int clipping; /* Clipping flag, same as the CD */
+int write_mode; /* Write Mode flag, same as the CD */
+
+long pattern[SIZE*SIZE]; /* Pattern buffer */
+unsigned char stipple[SIZE*SIZE]; /* Stipple buffer */
+unsigned char red[100*100]; /* Red image buffer */
+unsigned char green[100*100]; /* Green image buffer */
+unsigned char blue[100*100]; /* Blue image buffer */
+unsigned char alpha[100*100]; /* Alpha image buffer */
+
+
+/* Prototype of the function that makes the drawing independent of canvas. */
+void SimpleDraw(void);
+
+
+void SimpleCreateCanvas(cdContext* drv, char* data)
+{
+ int c, l;
+
+ simple_drv = drv;
+ simple_data = data;
+
+ /* creates the canvas based in an existing window */
+ myCanvas = cdCreateCanvas(drv, data);
+ clipping = CD_CLIPOFF;
+ write_mode = CD_REPLACE;
+
+ /* initialize the pattern buffer with a grey degrade */
+ for (l = 0; l < SIZE; l++)
+ for (c = 0; c < SIZE; c++)
+ {
+ unsigned char gray = (unsigned char)((l * 255) / (SIZE - 1));
+ pattern[l*20 + c] = cdEncodeColor(gray, gray, gray);
+ }
+
+ /* initialize the stipple buffer with cross pattern */
+ for (l = 0; l < SIZE; l++)
+ for (c = 0; c < SIZE; c++)
+ stipple[l*SIZE + c] = (c % 4) == 0? 1: 0;
+
+ /* initialize the alpha image buffer with a degrade from transparent to opaque */
+ for (l = 0; l < 100; l++)
+ for (c = 0; c < 100; c++)
+ alpha[l*100 + c] = (unsigned char)c;
+}
+
+int SimplePlayClipboard(void)
+{
+ /* interprets the contents of the clipboard */
+ int w, h;
+ cdActivate(myCanvas);
+ cdBackground(CD_WHITE);
+ cdClear();
+ cdGetCanvasSize(&w, &h, 0, 0);
+ cdPlay(CD_CLIPBOARD, 100, w-100, 100, h-100, NULL);
+ return 0;
+}
+
+int SimplePlayCGMBin(void)
+{
+ /* interprets the contents of the CGM file */
+ int w, h;
+ cdActivate(myCanvas);
+ cdBackground(CD_WHITE);
+ cdClear();
+ cdGetCanvasSize(&w, &h, 0, 0);
+ cdPlay(CD_CGM, 100, w-100, 100, h-100, "simple_b.cgm");
+ return 0;
+}
+
+
+int SimplePlayCGMText(void)
+{
+ /* interprets the contents of the CGM file */
+ int w, h;
+ cdActivate(myCanvas);
+ cdBackground(CD_WHITE);
+ cdClear();
+ cdGetCanvasSize(&w, &h, 0, 0);
+ cdPlay(CD_CGM, 100, w-100, 100, h-100, "simple_t.cgm");
+ return 0;
+}
+
+
+int SimplePlayMetafile(void)
+{
+ int w, h;
+ /* interprets the contents of the CD Metafile */
+ cdActivate(myCanvas);
+ cdBackground(CD_WHITE);
+ cdClear();
+ cdGetCanvasSize(&w, &h, 0, 0);
+ cdPlay(CD_METAFILE, 100, w-100, 100, h-100, "simple.cdmf");
+ return 0;
+}
+
+int SimplePlayWMF(void)
+{
+ int w, h;
+ /* interprets the contents of the WMF file */
+ cdActivate(myCanvas);
+ cdBackground(CD_WHITE);
+ cdClear();
+ cdGetCanvasSize(&w, &h, 0, 0);
+ cdPlay(CD_WMF, 100, w-100, 100, h-100, "simple.wmf");
+ return 0;
+}
+
+int SimplePlayEMF(void)
+{
+ int w, h;
+ /* interprets the contents of the EMF file */
+ cdActivate(myCanvas);
+ cdBackground(CD_WHITE);
+ cdClear();
+ cdGetCanvasSize(&w, &h, 0, 0);
+ cdPlay(CD_EMF, 100, w-100, 100, h-100, "simple.emf");
+ return 0;
+}
+
+int SimpleDrawWindow(void)
+{
+ /* draws in the window */
+ cdActivate(myCanvas);
+ SimpleDraw();
+ return 0;
+}
+
+int SimpleDrawCGMText(void)
+{
+ char StrData[100];
+ int w, h;
+ cdCanvas* tmpCanvas;
+ cdActivate(myCanvas);
+ cdGetCanvasSize(&w, &h, 0, 0);
+ sprintf(StrData, "simple_t.cgm %gx%g 1 -t", (double)w, (double)h);
+
+ /* draws in the CGM file */
+ tmpCanvas = cdCreateCanvas(CD_CGM, StrData);
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawCGMBin(void)
+{
+ char StrData[100];
+ int w, h;
+ cdCanvas* tmpCanvas;
+ cdActivate(myCanvas);
+ cdGetCanvasSize(&w, &h, 0, 0);
+ sprintf(StrData, "simple_b.cgm %gx%g", (double)w, (double)h);
+
+ /* draws in the CGM file */
+ tmpCanvas = cdCreateCanvas(CD_CGM, StrData);
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawDXF(void)
+{
+ char StrData[100];
+ int w, h;
+ cdCanvas* tmpCanvas;
+ cdActivate(myCanvas);
+ cdGetCanvasSize(&w, &h, 0, 0);
+ sprintf(StrData, "simple.dxf %gx%g", (double)w, (double)h);
+
+ /* draws in the DXF file */
+ tmpCanvas = cdCreateCanvas(CD_DXF, StrData);
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawDGN(void)
+{
+ char StrData[100];
+ int w, h;
+ cdCanvas* tmpCanvas;
+ cdActivate(myCanvas);
+ cdGetCanvasSize(&w, &h, 0, 0);
+ sprintf(StrData, "simple.dgn %gx%g", (double)w, (double)h);
+
+ /* draws in the DGN file */
+ tmpCanvas = cdCreateCanvas(CD_DGN, StrData);
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawEMF(void)
+{
+ char StrData[100];
+ int w, h;
+ cdCanvas* tmpCanvas;
+ cdActivate(myCanvas);
+ cdGetCanvasSize(&w, &h, 0, 0);
+ sprintf(StrData, "simple.emf %dx%d", w, h);
+
+ /* draws in the EMF file */
+ tmpCanvas = cdCreateCanvas(CD_EMF, StrData);
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawMetafile(void)
+{
+ char StrData[100];
+ int w, h;
+ cdCanvas* tmpCanvas;
+ cdActivate(myCanvas);
+ cdGetCanvasSize(&w, &h, 0, 0);
+ sprintf(StrData, "simple.cdmf %gx%g", (double)w, (double)h);
+
+ /* draws in the CD Metafile */
+ tmpCanvas = cdCreateCanvas(CD_METAFILE, StrData);
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawPS(void)
+{
+ /* draws in the PS file */
+ cdCanvas* tmpCanvas = cdCreateCanvas(CD_PS, "simple.ps");
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawEPS(void)
+{
+ /* draws in the EPS file */
+ cdCanvas* tmpCanvas = cdCreateCanvas(CD_PS, "simple.eps -e");
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawWMF(void)
+{
+ char StrData[100];
+ int w, h;
+ cdCanvas* tmpCanvas;
+ cdActivate(myCanvas);
+ cdGetCanvasSize(&w, &h, 0, 0);
+ sprintf(StrData, "simple.wmf %dx%d", w, h);
+
+ /* draws in the WMF file */
+ tmpCanvas = cdCreateCanvas(CD_WMF, StrData);
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawPrint(void)
+{
+ /* draws in the Printer canvas */
+ cdCanvas* tmpCanvas = cdCreateCanvas(CD_PRINTER, "simple");
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawPrintDialog(void)
+{
+ /* draws in the Printer canvas, but first shows the printer dialog */
+ cdCanvas* tmpCanvas = cdCreateCanvas(CD_PRINTER, "simple -d");
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawClipboardBitmap(void)
+{
+ char StrData[100];
+ int w, h;
+ cdCanvas* tmpCanvas;
+ cdActivate(myCanvas);
+ cdGetCanvasSize(&w, &h, 0, 0);
+ sprintf(StrData, "%dx%d -b", w, h);
+
+ /* draws in the CLipboard canvas as a bitmap */
+ tmpCanvas = cdCreateCanvas(CD_CLIPBOARD, StrData);
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawClipboardMetafile(void)
+{
+ char StrData[100];
+ int w, h;
+ cdCanvas* tmpCanvas;
+ cdActivate(myCanvas);
+ cdGetCanvasSize(&w, &h, 0, 0);
+ sprintf(StrData, "%dx%d -m", w, h);
+
+ /* draws in the CLipboard canvas as a metafile */
+ tmpCanvas = cdCreateCanvas(CD_CLIPBOARD, StrData);
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleDrawClipboardWMFEMF(void)
+{
+ char StrData[100];
+ int w, h;
+ cdCanvas* tmpCanvas;
+ cdActivate(myCanvas);
+ cdGetCanvasSize(&w, &h, 0, 0);
+ sprintf(StrData, "%dx%d", w, h);
+
+ /* draws in the CLipboard canvas as a metafile */
+ tmpCanvas = cdCreateCanvas(CD_CLIPBOARD, StrData);
+ if (tmpCanvas == NULL) return 0;
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+ return 0;
+}
+
+int SimpleReplace(void)
+{
+ write_mode = CD_REPLACE;
+ cdActivate(myCanvas);
+ SimpleDraw();
+ return 0;
+}
+
+int SimpleXor(void)
+{
+ write_mode = CD_XOR;
+ cdActivate(myCanvas);
+ SimpleDraw();
+ return 0;
+}
+
+int SimpleNotXor(void)
+{
+ write_mode = CD_NOT_XOR;
+ cdActivate(myCanvas);
+ SimpleDraw();
+ return 0;
+}
+
+int SimpleClippingOff(void)
+{
+ clipping = CD_CLIPOFF;
+ cdActivate(myCanvas);
+ SimpleDraw();
+ return 0;
+}
+
+int SimpleClippingArea(void)
+{
+ clipping = CD_CLIPAREA;
+ cdActivate(myCanvas);
+ SimpleDraw();
+ return 0;
+}
+
+int SimpleClippingPolygon(void)
+{
+ clipping = CD_CLIPPOLYGON;
+ cdActivate(myCanvas);
+ SimpleDraw();
+ return 0;
+}
+
+int SimpleDrawImage(void)
+{
+ void* myImage;
+ int w, h;
+ cdCanvas* tmpCanvas;
+ cdActivate(myCanvas);
+ cdGetCanvasSize(&w, &h, 0, 0);
+
+ myImage = cdCreateImage(w, h);
+ if (myImage == NULL) return 0;
+
+ /* draws in the Server Image canvas */
+ tmpCanvas = cdCreateCanvas(CD_IMAGE, myImage);
+ if (tmpCanvas == NULL)
+ {
+ cdKillImage(myImage);
+ return 0;
+ }
+
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+
+ /* transfer the contents of the image to the window canvas */
+ cdActivate(myCanvas);
+ cdBackground(CD_WHITE);
+ cdClear();
+ cdPutImage(myImage, 0, 0);
+
+ cdKillImage(myImage);
+ return 0;
+}
+
+int SimpleDrawImageRGB(void)
+{
+ char StrData[100];
+ unsigned char *r, *g, *b;
+ int size, w, h;
+ cdCanvas* tmpCanvas;
+ cdActivate(myCanvas);
+ cdGetCanvasSize(&w, &h, 0, 0);
+
+ size = w * h;
+ r = (unsigned char*)malloc(size);
+ if (r == NULL) return 0;
+
+ g = (unsigned char*)malloc(size);
+ if (g == NULL)
+ {
+ free(g);
+ return 0;
+ }
+
+ b = (unsigned char*)malloc(size);
+ if (b == NULL)
+ {
+ free(r);
+ free(g);
+ return 0;
+ }
+
+ sprintf(StrData, "%dx%d %p %p %p", w, h, r, g, b);
+
+ /* draws in the Client Image canvas */
+ tmpCanvas = cdCreateCanvas(CD_IMAGERGB, StrData);
+ if (tmpCanvas == NULL)
+ {
+ free(r);
+ free(g);
+ free(b);
+ return 0;
+ }
+
+ cdActivate(tmpCanvas);
+ SimpleDraw();
+ cdKillCanvas(tmpCanvas);
+
+ /* transfer the contents of the image to the window canvas */
+ cdActivate(myCanvas);
+ cdBackground(CD_WHITE);
+ cdClear();
+ cdPutImageRGB(w, h, r, g, b, 0, 0, w, h);
+
+ free(r);
+ free(g);
+ free(b);
+ return 0;
+}
+
+int SimpleDrawSimulate(void)
+{
+ cdActivate(myCanvas);
+ cdBackground(CD_WHITE);
+ cdClear();
+
+ cdSimulate(CD_SIM_ALL);
+
+ SimpleDraw();
+
+ cdSimulate(CD_SIM_NONE);
+
+ return 0;
+}
+
+void SimpleKillCanvas(void)
+{
+ if (myCanvas != NULL)
+ {
+ cdKillCanvas(myCanvas);
+ myCanvas = NULL;
+ }
+}
+
+
+static void SimpleDraw(void)
+{
+ int w, h;
+
+ cdGetCanvasSize(&w, &h, 0, 0);
+
+ switch(clipping)
+ {
+ case CD_CLIPOFF:
+ cdClip(CD_CLIPOFF);
+ break;
+ case CD_CLIPAREA:
+ /* Defines the clipping area equals the canvas area minus a 100 pixels margin. */
+ cdClipArea(100, w - 100, 100, h - 100);
+ cdClip(CD_CLIPAREA);
+ break;
+ case CD_CLIPPOLYGON:
+ cdBegin(CD_CLIP);
+ cdVertex(100, 100);
+ cdVertex(w - 100, 100);
+ cdVertex(w / 2, h - 100);
+ cdEnd();
+ cdClip(CD_CLIPPOLYGON);
+ break;
+ }
+
+ switch(write_mode)
+ {
+ case CD_REPLACE:
+ cdWriteMode(CD_REPLACE);
+ break;
+ case CD_XOR:
+ cdWriteMode(CD_XOR);
+ break;
+ case CD_NOT_XOR:
+ cdWriteMode(CD_NOT_XOR);
+ break;
+ }
+
+ /* Clear the background to be white */
+ cdInteriorStyle(CD_SOLID);
+ cdBackground(CD_WHITE);
+ cdClear();
+
+ cdForeground(CD_RED);
+ cdLineWidth(1);
+ cdLineStyle(CD_DASHED);
+ cdLine(0, 0, w, h);
+
+ cdForeground(CD_BLUE);
+ cdLineWidth(10);
+ cdLineStyle(CD_DOTTED);
+ cdLine(0, h, w, 0);
+
+ cdLineStyle(CD_CONTINUOUS);
+ cdLineWidth(1);
+
+ cdForeground(CD_GREEN);
+ cdArc(100, 100, 100, 100, 0, 180);
+ cdSector(w - 100, 100, 100, 100, 0, 180);
+
+ cdForeground(CD_YELLOW);
+ cdBox(w/2 - 100, w/2 + 100, h/2 - 100, h/2 + 100);
+
+ /* transparent text */
+ cdForeground(CD_BLUE);
+ cdBackOpacity(CD_TRANSPARENT);
+ cdTextAlignment(CD_CENTER);
+ cdFont(CD_TIMES_ROMAN, CD_BOLD, 24);
+ cdText(w/2, h/2, "Simple Draw");
+
+ /* draws all the mark type possibilities */
+ cdForeground(CD_RED);
+ cdMarkSize(30);
+ cdMarkType(CD_PLUS);
+ cdMark(200, 200);
+ cdMarkType(CD_CIRCLE);
+ cdMark(w - 200, 200);
+ cdMarkType(CD_HOLLOW_CIRCLE);
+ cdMark(200, h - 200);
+ cdMarkType(CD_DIAMOND);
+ cdMark(w - 200, h - 200);
+
+ /* draws all the line style possibilities */
+ cdLineWidth(1);
+ cdLineStyle(CD_CONTINUOUS);
+ cdLine(0, 10, w, 10);
+ cdLineStyle(CD_DASHED);
+ cdLine(0, 20, w, 20);
+ cdLineStyle(CD_DASH_DOT);
+ cdLine(0, 30, w, 30);
+ cdLineStyle(CD_DASH_DOT_DOT);
+ cdLine(0, 40, w, 40);
+
+ /* draws all the hatch style possibilities */
+ cdInteriorStyle(CD_HATCH);
+ cdHatch(CD_VERTICAL);
+ cdBox(0, 50, h - 60, h);
+ cdHatch(CD_FDIAGONAL);
+ cdBox(50, 100, h - 60, h);
+ cdHatch(CD_BDIAGONAL);
+ cdBox(100, 150, h - 60, h);
+ cdHatch(CD_CROSS);
+ cdBox(150, 200, h - 60, h);
+ cdHatch(CD_HORIZONTAL);
+ cdBox(200, 250, h - 60, h);
+ cdHatch(CD_DIAGCROSS);
+ cdBox(250, 300, h - 60, h);
+
+ /* closed polygon */
+ cdBegin(CD_CLOSED_LINES);
+ cdVertex(w/2, h - 100);
+ cdVertex(w/2 + 50, h - 150);
+ cdVertex(w/2, h - 200);
+ cdVertex(w/2 - 50, h - 150);
+ cdEnd();
+
+ /* hatch filled polygon */
+ cdInteriorStyle(CD_HATCH);
+ cdHatch(CD_DIAGCROSS);
+
+ cdBegin(CD_FILL);
+ cdVertex(100, h/2);
+ cdVertex(150, h/2 + 50);
+ cdVertex(200, h/2);
+ cdVertex(150, h/2 - 50);
+ cdEnd();
+
+ /* pattern filled polygon */
+ cdInteriorStyle(CD_PATTERN);
+ cdPattern(SIZE, SIZE, pattern);
+
+ cdBegin(CD_FILL);
+ cdVertex(w - 100, h/2);
+ cdVertex(w - 150, h/2 + 50);
+ cdVertex(w - 200, h/2);
+ cdVertex(w - 150, h/2 - 50);
+ cdEnd();
+
+ /* stipple filled polygon */
+ cdInteriorStyle(CD_STIPPLE);
+ cdStipple(SIZE, SIZE, stipple);
+
+ cdBegin(CD_FILL);
+ cdVertex(w/2, 100);
+ cdVertex(w/2 + 50, 150);
+ cdVertex(w/2, 200);
+ cdVertex(w/2 - 50, 150);
+ cdEnd();
+
+
+ /* always clear the image buffer contents */
+ memset(red, 0xFF, 100*100);
+ memset(green, 0xFF, 100*100);
+ memset(blue, 0xFF, 100*100);
+
+ cdGetImageRGB(red, green, blue, w - 200, 100, 100, 100);
+ cdPutImageRGB(100, 100, red, green, blue, 100, h - 200, 100, 100);
+ cdPutImageRGBA(100, 100, red, green, blue, alpha, w - 300, h - 300, 200, 200);
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 18:34:26 +0000