5 Commits

Author	SHA1	Message	Date
Norman Feske	658091bfad	ttf_font: add sanity check for invalid scale value ... The check prevents the Ttf_font from violating the bounding box in the presence of very small scale values. This can happen during the startup of Sculpt. Before the framebuffer driver is up, Sculpt bases its dynamic font-size setting on a screen resolution of 1x1. Issue #3812	2020-08-25 11:50:10 +02:00
Norman Feske	6b6915e304	ttf_font: fix artifacts with large font sizes ... This patch is a follow-up fix for "ttf_font: prevent out-of-bounds access", which produced sporadic single-pixel artifacts with large font sizes, e.g., with the monospaced font set to 24px in Sculpt. The artifacts occurred only for some horizontal sub-pixel positions, in combination with the font cache, and after the rendering of '>' characters. They were ultimately caused by the missed clearning of the first pixel of a glyph where x0 is 1 (e.g., the character 'd'). In this case, a pixel from the previously evicted cache entry (the '>') shined through. The patch fixes the problem by clearing the glyph starting from the first, not the x0's, pixel. Fixes #3567	2019-12-19 16:59:03 +01:00
Norman Feske	7e174e73be	ttf_font: prevent out-of-bounds access ... Thanks Alexander Böttcher for investigating. Fixes #3393	2019-06-13 12:17:31 +02:00
Norman Feske	8bcf540915	os: add Text_painter::Font::height method ... Issue #2716	2018-04-19 13:38:33 +02:00
Norman Feske	23f07331c8	gems: ttf_font library	2018-04-10 11:09:19 +02:00