emacs/src/w32dwrite.c, branch scratch/cedet-object-name

w32: fail gracefully when using invalid glyphs on DWrite

2025-03-27T13:01:53+00:00

* src/w32dwrite.c (text_extents_internal): Return false instead
of crashing with bad glyph indexes.  (Bug#77196)

Update copyright year to 2025

2025-01-01T07:39:17+00:00

Run "TZ=UTC0 admin/update-copyright".

; Fix typos

2024-11-21T09:06:19+00:00

Fix Cygw32 build

2024-11-12T12:41:01+00:00

* src/pdumper.c (dump_mm_heap_cb_release): Avoid NULL pointer
dereference.
* src/w32dwrite.c (INITGUID) [CYGWIN]: Don't define for Cygwin.
* src/w32menu.c (w32_popup_dialog): Fix Cygw32 build.  (Bug#74312)

; * src/w32dwrite.c (syms_of_w32dwrite): Init 'w32-inhibit-dwrite'.

2024-10-27T06:43:00+00:00

; Fix problem with DirectWrite (MS-Windows)

2024-10-27T06:25:06+00:00

Negative lbearings were not handled.

* src/w32dwrite.c (w32_dwrite_draw): Modified to handle negative
lbearing.

; Fix coding style of Uniscribe files

2024-10-26T00:39:24+00:00

* src/w32dwrite.c (EMACS_DWRITE_UNUSED, IDWriteFontFaceVtbl)
(IDWriteFontFace, IDWriteRenderingParamsVtbl)
(IDWriteRenderingParams, IDWriteFontVtbl, IDWriteFont)
(IDWriteBitmapRenderTargetVtbl, IDWriteBitmapRenderTarget)
(IDWriteBitmapRenderTarget1, IDWriteGdiInteropVtbl)
(IDWriteGdiInterop, IDWriteFactoryVtbl, IDWriteFactory)
(IDWriteColorGlyphRunEnumeratorVtbl)
(IDWriteColorGlyphRunEnumerator, IDWriteFactory2Vtbl)
(IDWriteFactory2, get_font_face, text_extents_internal)
(w32_initialize_direct_write, w32_dwrite_draw)
(w32_use_direct_write):

* src/w32font.c (w32font_text_extents, w32font_draw):

* src/w32uniscribe.c (uniscribe_open): Correct coding style.

; * src/w32dwrite.c (Fw32_dwrite_reinit): Doc fix.

2024-10-25T11:47:43+00:00

; Minor fixes to last changes

2024-10-25T11:36:41+00:00

* src/w32font.h:
* src/w32font.c:
* src/w32dwrite.c:
* etc/NEWS: Minor fixes of last changes.  (Bug#73730)

Implement drawing text with DirectWrite on MS-Windows.

2024-10-25T11:34:45+00:00

This adds support for color fonts.
* configure.ac: Add src/w32drite to W32_OBJ.
* src/w32dwrite.c: New file.
(w32-initialize-direct-write): New function, initialize the
DirectWrite library if it is available, and required global
variables.
(w32_use_direct_write): New function, check if DirectWrite
is available and activated by the user.
(w32_dwrite_encode_char): New function, replacement for HarfBuzz's
'encode_char'.
(w32_dwrite_text_extents): New function, replacement for w32font
text_extents.
(w32_dwrite_draw): New function, replacement for w32font draw.
(w32_dwrite_free_cached_face): New function, used in the font
deletion process to also delete DirectWrite data.
(verify_hr): New function, verify COM method results.
(release_com): New function, release a COM object.
(w32-dwrite-available): New function, returns true if DirectWrite
is available.
(w32-dwrite-reinit): New function, reinitialize DirectWrite,
optionally setting some rendering parameters.
* src/w32font.c (w32font_text_extents): If DirectWrite is enabled,
call 'w32_dwrite_text_extents'.
(w32font_draw): If DirectWrite is enabled, call 'w32_dwrite_draw'.
* src/w32uniscribe.c: (w32hb_encode_char): If DirectWrite is enabled,
call 'w32_dwrite_encode_char'.
(syms_of_w32uniscribe_for_pdumper): Initialize DirectWrite.
(uniscribe_close): Free DirectWrite data for the font.

Bug#73730