916b44e361
Each image has now two sizes implemented as follows:
- the pixel size is stored in private members pixel_w_ and pixel_h_
with public accessors pixel_w() and pixel_h()
- the FLTK size is stored in private members w_ and h_ and read by w() and h()
- when the image is constructed, the two sizes have the same value
- the protected w(int) and h(int) member functions set both FLTK and pixel sizes.
- the public scale(int, int) member function is essentially nothing but
set the FLTK size and don't change the pixel size.
- when the image is drawn, its FLTK size determines how big it is drawn, its pixel
size determines how much data are available to draw it.
FLTK 1.3.4 with FL_ABI_VERSION=10304 contained an equivalent member function
but only for the Fl_Shared_Image class.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12776 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
//
|
|
// "$Id$"
|
|
//
|
|
// Bitmap header file for the Fast Light Tool Kit (FLTK).
|
|
//
|
|
// Copyright 1998-2017 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
|
|
//
|
|
|
|
/* \file
|
|
Fl_Bitmap widget . */
|
|
|
|
#ifndef Fl_Bitmap_H
|
|
#define Fl_Bitmap_H
|
|
#include "Fl_Image.H"
|
|
#include "Fl_Widget.H" // for fl_uintptr_t
|
|
|
|
class Fl_Widget;
|
|
struct Fl_Menu_Item;
|
|
|
|
/**
|
|
The Fl_Bitmap class supports caching and drawing of mono-color
|
|
(bitmap) images. Images are drawn using the current color.
|
|
*/
|
|
class FL_EXPORT Fl_Bitmap : public Fl_Image {
|
|
friend class Fl_Graphics_Driver;
|
|
public:
|
|
/** pointer to raw bitmap data */
|
|
const uchar *array;
|
|
/** Non-zero if array points to bitmap data allocated internally */
|
|
int alloc_array;
|
|
|
|
private:
|
|
int prepare(int XP, int YP, int WP, int HP, int &cx, int &cy,
|
|
int &X, int &Y, int &W, int &H);
|
|
/** for internal use */
|
|
fl_uintptr_t id_;
|
|
float cache_scale_; // graphics scaling value when id_ was computed
|
|
|
|
public:
|
|
/** The constructors create a new bitmap from the specified bitmap data */
|
|
Fl_Bitmap(const uchar *bits, int W, int H) :
|
|
Fl_Image(W,H,0), array(bits), alloc_array(0), id_(0), cache_scale_(1) {data((const char **)&array, 1);}
|
|
/** The constructors create a new bitmap from the specified bitmap data */
|
|
Fl_Bitmap(const char *bits, int W, int H) :
|
|
Fl_Image(W,H,0), array((const uchar *)bits), alloc_array(0), id_(0), cache_scale_(1) {data((const char **)&array, 1);}
|
|
virtual ~Fl_Bitmap();
|
|
virtual Fl_Image *copy(int W, int H);
|
|
Fl_Image *copy() { return copy(w(), h()); }
|
|
virtual void draw(int X, int Y, int W, int H, int cx=0, int cy=0);
|
|
void draw(int X, int Y) {draw(X, Y, w(), h(), 0, 0);}
|
|
virtual void label(Fl_Widget*w);
|
|
virtual void label(Fl_Menu_Item*m);
|
|
virtual void uncache();
|
|
};
|
|
|
|
#endif
|
|
|
|
//
|
|
// End of "$Id$".
|
|
//
|