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
87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
//
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// "$Id$"
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//
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// Pixmap header file for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2017 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// http://www.fltk.org/COPYING.php
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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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/* \file
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Fl_Pixmap widget . */
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#ifndef Fl_Pixmap_H
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#define Fl_Pixmap_H
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# include "Fl_Image.H"
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class Fl_Widget;
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struct Fl_Menu_Item;
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// Older C++ compilers don't support the explicit keyword... :(
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# if defined(__sgi) && !defined(_COMPILER_VERSION)
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# define explicit
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# endif // __sgi && !_COMPILER_VERSION
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/**
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The Fl_Pixmap class supports caching and drawing of colormap
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(pixmap) images, including transparency.
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*/
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class FL_EXPORT Fl_Pixmap : public Fl_Image {
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friend class Fl_Graphics_Driver;
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void copy_data();
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void delete_data();
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void set_data(const char * const *p);
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int prepare(int XP, int YP, int WP, int HP, int &cx, int &cy,
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int &X, int &Y, int &W, int &H);
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protected:
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void measure();
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public:
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int alloc_data; // Non-zero if data was allocated
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private:
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// for internal use
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fl_uintptr_t id_;
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fl_uintptr_t mask_;
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Fl_Color pixmap_bg_color;
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float cache_scale_; // graphics scaling value when id_ was computed
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public:
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/** The constructors create a new pixmap from the specified XPM data. */
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explicit Fl_Pixmap(char * const * D) : Fl_Image(-1,0,1), alloc_data(0), id_(0), mask_(0) {set_data((const char*const*)D); measure();}
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/** The constructors create a new pixmap from the specified XPM data. */
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explicit Fl_Pixmap(uchar* const * D) : Fl_Image(-1,0,1), alloc_data(0), id_(0), mask_(0) {set_data((const char*const*)D); measure();}
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/** The constructors create a new pixmap from the specified XPM data. */
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explicit Fl_Pixmap(const char * const * D) : Fl_Image(-1,0,1), alloc_data(0), id_(0), mask_(0) {set_data((const char*const*)D); measure();}
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/** The constructors create a new pixmap from the specified XPM data. */
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explicit Fl_Pixmap(const uchar* const * D) : Fl_Image(-1,0,1), alloc_data(0), id_(0), mask_(0) {set_data((const char*const*)D); measure();}
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virtual ~Fl_Pixmap();
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virtual Fl_Image *copy(int W, int H);
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Fl_Image *copy() { return copy(w(), h()); }
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virtual void color_average(Fl_Color c, float i);
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virtual void desaturate();
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virtual void draw(int X, int Y, int W, int H, int cx=0, int cy=0);
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void draw(int X, int Y) {draw(X, Y, w(), h(), 0, 0);}
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virtual void label(Fl_Widget*w);
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virtual void label(Fl_Menu_Item*m);
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virtual void uncache();
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};
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#endif
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//
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// End of "$Id$".
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//
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