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path: root/src/drivers/GDI/Fl_GDI_Graphics_Driver_image.cxx
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2017-05-17Introduce HiDPI + rescaling support for the X11 platform (+ partial support ↵Manolo Gouy
for WIN32) Corresponds to STR #3320 1) HiDPI support consists in detecting the adequate scaling factor for the screen on which FLTK maps a window, and scaling all FLTK units by this factor. FLTK tries to detect the correct value of this factor at startup (see more details below). Environment variable FLTK_SCALING_FACTOR can also be used to set this value. 2) Rescaling support consists in changing the scaling factor of all FLTK windows in reply to ctrl/+/-/0/ keystrokes. More details for the various platforms : - X11: Support is very advanced. Some details need still to be improved. Automatic detection of the correct starting value of the scaling factor works well with the gnome desktop. The present code contains no support for this on other desktops. FLTK_SCALING_FACTOR provides a workaround. -WIN32: Support is incomplete at this point, although many test applications have partial or complete HiDPI and scaling support. The current value of the system's scaling factor is correctly detected at application startup. Apps respond to changes of this value in real time. Support needs to define the FLTK_HIDPI_SUPPORT preprocessor variable at compile time. This way, standard builds produce a code with the default WIN32 HiDPI support, that is, where all graphics goes to an internal buffer that gets enlarged by the system and then mapped to the HiDPI display. To experiment with (or develop) the new HiDPI support requires a modified build procedure in which FLTK_HIDPI_SUPPORT is defined at compile time. When the support will be complete, the requirement for the definition of this preprocessor variable will be removed. The present commit contains support for a single scaling factor. Eventually, per-screen scaling factors should be implemented, as done for X11. - MacOS: this commit does not give new HiDPI for this platform. Eventually, window rescaling in reply to command/+/-/0/ is desirable. Per-screen scaling factor makes no sense on this platform because the OS itself takes care of the difference between the resolutions of traditional and retina displays. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12239 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2017-05-06De-duplicate code to load pointer to the TransparentBlt() system function at ↵Manolo Gouy
run-time. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12234 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-11-17WIN32 platform: Fix drawing of depth-4 scaled image when ↵Manolo Gouy
can_do_alpha_blending() is false. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12116 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-11-05Slightly improve the parameter list of member function int ↵Manolo Gouy
Fl_Graphics_Driver::start_image(...) git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@12079 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-11-03Rename Fl_Bitmap::start() to Fl_Bitmap::prepare().Manolo Gouy
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@12078 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-11-03Factorize repeated code across platform-specific graphics drivers and image ↵Manolo Gouy
types git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@12077 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-11-02Replace declarations such as "friend class Fl_Xlib_Graphics_Driver;" by ↵Manolo Gouy
platform-independent declarations. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@12076 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-10-30Replace erroneous bitwise & by logical &&Manolo Gouy
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@12063 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-10-30Add virtual Fl_RGB_Image* Fl_Image::as_rgb_image() to detect whether an ↵Manolo Gouy
Fl_Image is derived from Fl_RGB_Image git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@12061 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-10-22WIN platform: implement Fl_GDI_Graphics_Driver::draw_scaled(Fl_Image ↵Manolo Gouy
*img,int,int,int,int) when img is a Fl_RGB_Image Implementation uses StretchBlt() when img->d() is 1 or 3 and AlphaBlend() when it is 2 or 4. This should turn useful to draw images on HighDPI displays using the display's true resolution. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@12053 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-04-12Rewrite fl_draw_pixmap.cxx under the driver model.Manolo Gouy
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11587 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-03-26Remove a few uses of the fl_graphics_driver global variableManolo Gouy
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11439 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-03-02Fix negative 'd' and 'ld' args in fl_draw_image() (X11 + Windows).Albrecht Schlosser
This commit fixes a regression in FLTK 1.3.x, where negative values of 'd' (pixel delta) and 'ld' (line delta) didn't work anymore under Unix/Linux (X11) and Windows. With this commit the regression is fixed on all supported platforms. Equivalent of branch-1.3, svn r11270. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11272 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-02-27Rewrite all fl_XXX_offscreen() functions so they use an Fl_Image_Surface object.Manolo Gouy
These functions become therefore platform-independent. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11241 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-02-26Rename all remaining src/drivers/XXX.h to XXX.HManolo Gouy
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11226 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-02-25Remove the global variable fl_mask_bitmap - put it in the graphics driver's ↵Manolo Gouy
virtual API. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11216 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-02-23Fix Fl_RGB_Image::uncache() and Fl_Bitmap::uncache().Manolo Gouy
It is not possible to use fl_graphics_driver in these functions because when they are called *fl_graphics_driver may have been deleted. A solution is to use Fl_Display_Device::display_device()->driver() instead which is always valid. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11212 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-02-19Rename Fl_Graphics_Driver::set_gc(void*) to gc(void*) and ↵Manolo Gouy
Fl_Graphics_Driver::get_gc() to gc(). git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11191 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-02-18Remove all uses of the fl_gc global variable. Towards a clean driver model.Manolo Gouy
fl_gc remains usable by the application as a hook into the system. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11189 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-02-09Fix MSWindows issues from last refactoring.Matthias Melcher
During the last refactoring on OS X, a few thing were relocated into new files, mainly to avoid ifdef's and use C++ inheritance in a driver system instead. This commit makes FLTK compile again under VC2013 with IDE files generated by CMake. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11141 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-02-09Move ifdef's in RGB_Image into driver system.Matthias Melcher
- change image caching variable types to uintptr_t - added driver function to uncache image data - cleaning up (Xlib and GDI will likely throw syntax errors. Trying to fix ASAP) git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11138 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-01-31Fixed WIN32 setup. X11 setup verified.Matthias Melcher
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11101 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-01-31Moved fl_create_bitmask and fl_delete_bitmask functions into driver ↵Matthias Melcher
structure. Tested on OS X. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11100 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-01-31Update build system to compile all drivers as indiviual objects.Albrecht Schlosser
Removed obsolete files that served only one purpose: to #include different driver files. Updated CMake and Makefiles to reflect the changes. Build tested with: - MinGW + configure/make - MinGW + CMake/make - Visual Studio 2010 generated by CMake git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11092 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2016-01-26Moving image drawing code into the driver systemMatthias Melcher
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@11060 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
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