Initial revision

git-svn-id: file:///fltk/svn/fltk/trunk@2 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 108 insertions, 0 deletions

diff --git a/test/image.cxx b/test/image.cxx
new file mode 100644
index 000000000..3a2e79c44
--- /dev/null
+++ b/test/image.cxx
@@ -0,0 +1,108 @@
+// Test of class Fl_Image
+//
+// Notice that Fl_Image is for a static, multiple-reuse image, such
+// as an icon or postage stamp.  Use fl_draw_image to go directly
+// from an buffered image that changes often.
+
+#include <FL/Fl.H>
+#include <FL/Fl_Window.H>
+#include <FL/Fl_Button.H>
+#include <FL/Fl_Image.H>
+#include <stdio.h>
+#include <stdlib.h>
+
+int width = 75;
+int height = 75;
+uchar *image;
+
+void make_image() {
+  image = new uchar[3*width*height];
+  uchar *p = image;
+  for (int y = 0; y < height; y++) {
+    double Y = double(y)/(height-1);
+    for (int x = 0; x < width; x++) {
+      double X = double(x)/(width-1);
+      *p++ = uchar(255*((1-X)*(1-Y))); // red in upper-left
+      *p++ = uchar(255*((1-X)*Y));	// green in lower-left
+      *p++ = uchar(255*(X*Y));	// blue in lower-right
+    }
+  }
+}
+
+#include <FL/Fl_Toggle_Button.H>
+
+Fl_Toggle_Button *leftb,*rightb,*topb,*bottomb,*insideb;
+Fl_Button *b;
+Fl_Window *w;
+
+void button_cb(Fl_Widget *,void *) {
+    int i = 0;
+    if (leftb->value()) i |= FL_ALIGN_LEFT;
+    if (rightb->value()) i |= FL_ALIGN_RIGHT;
+    if (topb->value()) i |= FL_ALIGN_TOP;
+    if (bottomb->value()) i |= FL_ALIGN_BOTTOM;
+    if (insideb->value()) i |= FL_ALIGN_INSIDE;
+    b->align(i);
+    w->redraw();
+}
+
+#include <FL/x.H>
+#include "list_visuals.C"
+
+int visid = -1;
+int arg(int argc, char **argv, int &i) {
+  if (argv[i][1] == 'v') {
+    if (i+1 >= argc) return 0;
+    visid = atoi(argv[i+1]);
+    i += 2;
+    return 2;
+  }
+  return 0;
+}
+
+int main(int argc, char **argv) {
+
+#ifndef WIN32
+  int i = 1;
+  if (Fl::args(argc,argv,i,arg) < argc) {
+    fprintf(stderr," -v # : use visual\n%s\n",Fl::help);
+    exit(1);
+  }
+
+  if (visid >= 0) {
+    fl_open_display();
+    XVisualInfo templt; int num;
+    templt.visualid = visid;
+    fl_visual = XGetVisualInfo(fl_display, VisualIDMask, &templt, &num);
+    if (!fl_visual) {
+      fprintf(stderr, "No visual with id %d, use one of:\n",visid);
+      list_visuals();
+      exit(1);
+    }
+    fl_colormap = XCreateColormap(fl_display, RootWindow(fl_display,fl_screen),
+				fl_visual->visual, AllocNone);
+    fl_xpixel(FL_BLACK); // make sure black is allocated in overlay visuals
+  } else {
+    Fl::visual(FL_RGB);
+  }
+#endif
+
+  Fl_Window window(400,400); ::w = &window;
+  Fl_Button b(140,160,120,120,0); ::b = &b;
+  make_image();
+  (new Fl_Image(image, width, height))->label(&b);
+  leftb = new Fl_Toggle_Button(50,75,50,25,"left");
+  leftb->callback(button_cb);
+  rightb = new Fl_Toggle_Button(100,75,50,25,"right");
+  rightb->callback(button_cb);
+  topb = new Fl_Toggle_Button(150,75,50,25,"top");
+  topb->callback(button_cb);
+  bottomb = new Fl_Toggle_Button(200,75,50,25,"bottom");
+  bottomb->callback(button_cb);
+  insideb = new Fl_Toggle_Button(250,75,50,25,"inside");
+  insideb->callback(button_cb);
+  window.resizable(window);
+  window.end();
+  window.show(argc, argv);
+  return Fl::run();
+}