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win: split WIN_FLAGS_IMAGE_STALE

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Split it into PIXMAP_STALE and SHADOW_STALE, this allows us to update
pixmaps and shadow images separately.

Also added PIXMAP_NONE and SHADOW_NONE, as redundancy to detect logic
errors.

Convenient constants and functions are provided for updating pixmap and
shadow together.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
Yuxuan Shui
2019-09-19 18:48:12 +01:00
parent 1549997811
commit eecee130b8
5 changed files with 143 additions and 66 deletions
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21
src/win_defs.h
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@ -1,4 +1,5 @@
#pragma once
#include <stdint.h>
typedef enum {
WINTYPE_UNKNOWN,
@ -67,8 +68,22 @@ typedef enum {
} winstate_t;
enum win_flags {
/// win_image/shadow_image is out of date
WIN_FLAGS_IMAGE_STALE = 1,
// Note: *_NONE flags are mostly redudant and meant for detecting logical errors
// in the code
/// pixmap is out of date, will be update in win_process_flags
WIN_FLAGS_PIXMAP_STALE = 1,
/// window does not have pixmap bound
WIN_FLAGS_PIXMAP_NONE = 2,
/// there was an error trying to bind the images
WIN_FLAGS_IMAGE_ERROR = 2,
WIN_FLAGS_IMAGE_ERROR = 4,
/// shadow is out of date, will be updated in win_process_flags
WIN_FLAGS_SHADOW_STALE = 8,
/// shadow has not been generated
WIN_FLAGS_SHADOW_NONE = 16,
};
static const int_fast16_t WIN_FLAGS_IMAGES_STALE =
WIN_FLAGS_PIXMAP_STALE | WIN_FLAGS_SHADOW_STALE;
static const int_fast16_t WIN_FLAGS_IMAGES_NONE = WIN_FLAGS_PIXMAP_NONE | WIN_FLAGS_SHADOW_NONE;