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//
// "$Id$"
//
// Tiled image code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2010 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include <FL/Fl.H>
#include <FL/Fl_Tiled_Image.H>
#include <FL/fl_draw.H>
/**
The constructors create a new tiled image containing the specified image.
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());
}
/**
The destructor frees all memory and server resources that are used by
the tiled image.
*/
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
if (!alloc_image_) {
image_ = image_->copy();
alloc_image_ = 1;
}
image_->color_average(c, i);
}
//
// 'Fl_Tiled_Image::desaturate()' - Convert the image to grayscale...
//
void
Fl_Tiled_Image::desaturate() {
if (!alloc_image_) {
image_ = image_->copy();
alloc_image_ = 1;
}
image_->desaturate();
}
//
// '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();
fl_push_clip(X, Y, W, 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);
fl_pop_clip();
}
//
// End of "$Id$".
//
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