Added XBM, XPM, and PNM image file classes.

The pixmap_browser demo now supports all image formats via Fl_Shared_Image.

Dropped image file stuff from image demo.

Added Fl_Tiled_Image class, which tiles an Fl_Image, useful for tiling a
background image in groups.

Added tiled_image demo.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@1725 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 133 insertions, 0 deletions

diff --git a/src/Fl_Tiled_Image.cxx b/src/Fl_Tiled_Image.cxx
new file mode 100644
index 000000000..fc652ca43
--- /dev/null
+++ b/src/Fl_Tiled_Image.cxx
@@ -0,0 +1,133 @@
+//
+// "$Id: Fl_Tiled_Image.cxx,v 1.1.2.1 2001/11/24 18:07:57 easysw Exp $"
+//
+// Tiled image code for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2001 by Bill Spitzak and others.
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library 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
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library 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.
+//
+// Please report all bugs and problems to "fltk-bugs@fltk.org".
+//
+
+#include <FL/Fl.H>
+#include <FL/Fl_Tiled_Image.H>
+#include <FL/fl_draw.H>
+
+
+//
+// 'Fl_Tiled_Image::Fl_Tiled_Image()' - Constructor.
+//
+// Use a width and height of 0 to tile the whole window/widget.
+//
+
+Fl_Tiled_Image::Fl_Tiled_Image(Fl_Image *i,	// I - Image to tile
+                               int      W,	// I - Width of tiled area
+			       int      H) :	// I - Height of tiled area
+  Fl_Image(W,H,0) {
+  image_       = i;
+  alloc_image_ = 0;
+
+  if (W == 0) w(Fl::w());
+  if (H == 0) h(Fl::h());
+}
+
+
+//
+// 'Fl_Tiled_Image::~Fl_Tiled_Image()' - Destructor.
+//
+
+Fl_Tiled_Image::~Fl_Tiled_Image() {
+  if (alloc_image_) delete image_;
+}
+
+
+//
+// 'Fl_Tiled_Image::copy()' - Copy and resize a tiled image...
+//
+
+Fl_Image *			// O - New image
+Fl_Tiled_Image::copy(int W,	// I - New width
+                     int H) {	// I - New height
+  if (W == w() && H == h()) return this;
+  else return new Fl_Tiled_Image(image_, W, H);
+}
+
+
+//
+// 'Fl_Tiled_Image::color_average()' - Blend colors...
+//
+
+void
+Fl_Tiled_Image::color_average(Fl_Color c,	// I - Color to blend with
+                              float    i) {	// I - Blend fraction
+  Fl_Image *temp = image_->copy();
+
+  temp->color_average(c, i);
+
+  image_       = temp;
+  alloc_image_ = 1;
+}
+
+
+//
+// 'Fl_Tiled_Image::desaturate()' - Convert the image to grayscale...
+//
+
+void
+Fl_Tiled_Image::desaturate() {
+  Fl_Image *temp = image_->copy();
+
+  temp->desaturate();
+
+  image_       = temp;
+  alloc_image_ = 1;
+}
+
+
+//
+// 'Fl_Tiled_Image::draw()' - Draw a shared image...
+//
+
+void
+Fl_Tiled_Image::draw(int X,	// I - Starting X position
+                     int Y,	// I - Starting Y position
+		     int W,	// I - Width of area to be filled
+		     int H,	// I - Height of area to be filled
+		     int cx,	// I - "Source" X position
+		     int cy) {	// I - "Source" Y position
+  if (!image_->w() || !image_->h()) return;
+  if (W == 0) W = Fl::w();
+  if (H == 0) H = Fl::h();
+
+  X += cx;
+  Y += cy;
+
+  X = X - (X % image_->w());
+  Y = Y - (Y % image_->h());
+
+  W += X;
+  H += Y;
+
+  for (int yy = Y; yy < H; yy += image_->h())
+    for (int xx = X; xx < W; xx += image_->w())
+      image_->draw(xx, yy);
+}
+
+
+//
+// End of "$Id: Fl_Tiled_Image.cxx,v 1.1.2.1 2001/11/24 18:07:57 easysw Exp $".
+//