e454f97acc
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7903 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
136 lines
3.2 KiB
C++
136 lines
3.2 KiB
C++
//
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// "$Id$"
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//
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// Tiled image code for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2010 by Bill Spitzak and others.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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#include <FL/Fl.H>
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#include <FL/Fl_Tiled_Image.H>
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#include <FL/fl_draw.H>
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/**
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The constructors create a new tiled image containing the specified image.
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Use a width and height of 0 to tile the whole window/widget.
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*/
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Fl_Tiled_Image::Fl_Tiled_Image(Fl_Image *i, // I - Image to tile
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int W, // I - Width of tiled area
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int H) : // I - Height of tiled area
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Fl_Image(W,H,0) {
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image_ = i;
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alloc_image_ = 0;
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if (W == 0) w(Fl::w());
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if (H == 0) h(Fl::h());
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}
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/**
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The destructor frees all memory and server resources that are used by
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the tiled image.
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*/
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Fl_Tiled_Image::~Fl_Tiled_Image() {
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if (alloc_image_) delete image_;
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}
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//
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// 'Fl_Tiled_Image::copy()' - Copy and resize a tiled image...
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//
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Fl_Image * // O - New image
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Fl_Tiled_Image::copy(int W, // I - New width
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int H) { // I - New height
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if (W == w() && H == h()) return this;
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else return new Fl_Tiled_Image(image_, W, H);
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}
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//
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// 'Fl_Tiled_Image::color_average()' - Blend colors...
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//
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void
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Fl_Tiled_Image::color_average(Fl_Color c, // I - Color to blend with
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float i) { // I - Blend fraction
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if (!alloc_image_) {
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image_ = image_->copy();
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alloc_image_ = 1;
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}
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image_->color_average(c, i);
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}
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//
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// 'Fl_Tiled_Image::desaturate()' - Convert the image to grayscale...
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//
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void
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Fl_Tiled_Image::desaturate() {
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if (!alloc_image_) {
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image_ = image_->copy();
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alloc_image_ = 1;
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}
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image_->desaturate();
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}
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//
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// 'Fl_Tiled_Image::draw()' - Draw a shared image...
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//
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void
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Fl_Tiled_Image::draw(int X, // I - Starting X position
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int Y, // I - Starting Y position
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int W, // I - Width of area to be filled
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int H, // I - Height of area to be filled
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int cx, // I - "Source" X position
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int cy) { // I - "Source" Y position
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if (!image_->w() || !image_->h()) return;
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if (W == 0) W = Fl::w();
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if (H == 0) H = Fl::h();
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fl_push_clip(X, Y, W, H);
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X += cx;
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Y += cy;
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X = X - (X % image_->w());
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Y = Y - (Y % image_->h());
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W += X;
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H += Y;
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for (int yy = Y; yy < H; yy += image_->h())
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for (int xx = X; xx < W; xx += image_->w())
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image_->draw(xx, yy);
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fl_pop_clip();
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}
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//
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// End of "$Id$".
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//
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