Conflicting demands arise in the implementation of class Fl_Xlib_Graphics_Driver
for drawing images with the XRender library :
1) Issue #163 leads to use a bilinear filter to draw-and-scale images.
2) This tends to blur the edges of drawn areas which is bad for tiled images
(that is because the edges get alpha values, even for an opaque source image).
This commit resolves the conflict adding a means to detect whether the library
is busy drawing a tiled image. If so, the bilinear filter is not applied, drawn areas
don't have blurred edges, resulting in a nice tiling.
With this commit, these test apps perform correctly:
- tiled_image is correct at all scaling factor values also when modified
to use a depth-3 or a depth-4 Fl_RGB_Image as tile;
- unittests - Drawing Images is correct at all scaling factor values;
- pixmap_browser scales correctly up and down JPEG and PNG images.
Fix Fl_Tiled_Image made from scaled source image.
Fix Fl_Shared_Image::update() to allow scaled source image.
Correct handling of default value (-1) of 3rd argument of 3-argument Fl_BMP_Image constructor.
Copying an image does not (and must not) change the original object,
hence copy() should always be 'const'.
This is *necessary* if the given Fl_Image object is 'const'.
Remove false "optimization" that would return the same pointer
if the requested width and height are the same.
Note: copy() must always return a new image (this is the expected
behavior of copy). Otherwise deleting one of the objects (either
the source or the copy) would delete the other one as well.
- remove obsolete svn '$Id$' tags from all source files
- update .fl files and generated files accordingly
- replace 'http://www.fltk.org' URL's with 'https://...'
- replace bug report URL 'str.php' with 'bugs.php'
- remove trailing whitespace
- fix other whitespace errors flagged by Git
- add and/or fix missing or wrong standard headers
- convert tabs to spaces in all source files
The only relevant code changes are in the fluid/ folder where
some .fl files and other source files were used to generate
the '$Id' headers and footers.
Fl::scheme("plastic") now correctly sets the background image width and
height to 0, which causes the background image to fill the whole window.
Fl_Tiled_Image drawing was partly broken. Offsets (cx, cy) were not used
correctly, and some other inconsistencies with arguments were possible.
Drawing has been optimized to draw only those tiles that are not clipped.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10598 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
- Fl_GIF_Image and Fl_PNG_Image didn't close the file before
calling Fl::error().
- Fl_Help_View didn't clear the line array in Fl_Help_Block,
and Fl_Help_Block::font and ::size were not used.
- Fl_Shared_Image::get() didn't return NULL if the image
could not be loaded.
- Switched to more efficient code for
Fl_Tiled_Image::color_average() and ::desaturate().
- Don't delete children in Fl_Text_Display since the group
will do it.
- Fixes to filename_isdir(), filename_absolute(), and
filename_relative().
- Was using numbers instead of define constants for some
OpenGL stuff under WIN32.
- Wasn't exporting threading functions under WIN32.
- The Fl_Widget destructor now removes from the parent to
avoid a Purify error since the old widget would be
referenced by the parent when it was destroyed; this has
no apparent performance impact since Fl_Group::clear()
sets children_ to 0, making Fl_Group::remove() very
fast...
- WIN32 font enumeration datatype fixes...
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@1878 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Clip Fl_Tiled_Image to the bounding box.
Draw Fl_Progress using the box.
Draw plastic box types right for narrow (but horizontal buttons)
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@1814 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
The pixmap_browser demo now supports all image formats via Fl_Shared_Image.
Dropped image file stuff from image demo.
Added Fl_Tiled_Image class, which tiles an Fl_Image, useful for tiling a
background image in groups.
Added tiled_image demo.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@1725 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
