Avoid STDERR messages on launch:
libpng warning: Interlace handling should be turned on when using png_read_image
(Except the fact that Tux Paint _itself_ saves drawings with
interlace enabled. :-/)
With this, closes https://sourceforge.net/p/tuxpaint/bugs/252/
Tweaks to icon. Further modularized how color button rendering works,
so it can handle selector (pipette) and mixer overlay icons.
Mixer function is basically identical to color picker (rainbow palette)
as a placeholder. WORK IN PROGRESS.
Also, modularize color picker's & color selector's method of
generating a fresh version of their active/inactive buttons,
after a color has been chosen by their tool.
Starting work towards
https://sourceforge.net/p/tuxpaint/feature-requests/213/
The ability to 'apply' a label to the canvas, making it permanent
(as if added using the "Text" tool instead).
Removed unused "label rotate" option's code (and hence addressed
a bug we didn't relalize when choosing the "Label" tool while in
in "--nostampcontrols" mode; the unused "rotate" button would appear).
Tweaks to icon. Further modularized how color button rendering works,
so it can handle selector (pipette) and mixer overlay icons.
Mixer function is basically identical to color picker (rainbow palette)
as a placeholder. WORK IN PROGRESS.
Also, modularize color picker's & color selector's method of
generating a fresh version of their active/inactive buttons,
after a color has been chosen by their tool.
Unlike "directional" brushes, in which a 3x3 grid representing the
8 cardinal directions (45 degree steps) is used, only a single brush
image is required, and Tux Paint will rotate it between 0 and 360 degrees,
depending on the direction the mouse is going.
The brush's ".dat" file should contain a line consisting of the word
"rotate".
Note: This adds a dependency on "SDL_gfx" library (Homepage:
https://www.ferzkopp.net/wordpress/2016/01/02/sdl_gfx-sdl2_gfx/
SourceForge project page: https://sourceforge.net/projects/sdlgfx/)
as this feature use it's "rotozoom" functionality.
WIP -- Doesn't handle animated brushes correctly yet!
Closes https://sourceforge.net/p/tuxpaint/feature-requests/122/
On-screen keyboard (visible when the feature is enabled, while
using the "Text" and "Label" tools) now appears with larger
(48x48 pixel, vs 24x24 pixel) buttons, when Tux Paint's window
(or fullscreen) size is large enough to fit them with the
chosen layout.
(h/t Anat & Aviv, who suggested it to help with users of
eye-tracking systems)
Also, on-screen keyboard buttons use a slightly larger font
(16pt vs 12pt, previously seen on the small keyboard;
32pt on the large keyboard).
