lib:http://www.pixman.org/
存储库:https://cgit.freedesktop.org/pixman/tree/
空区域(pixman_region32_t * pixman_region32_init );
我找不到那个函数的实现。
谢谢..。
发布于 2018-06-27 18:44:08
它可以在pixman/pixman.h中找到(pixman-0.34.0)
ypedef struct pixman_region32_data pixman_region32_data_t;
typedef struct pixman_box32 pixman_box32_t;
typedef struct pixman_rectangle32 pixman_rectangle32_t;
typedef struct pixman_region32 pixman_region32_t;
struct pixman_region32_data {
long size;
long numRects;
/* pixman_box32_t rects[size]; in memory but not explicitly declared */
};
struct pixman_rectangle32
{
int32_t x, y;
uint32_t width, height;
};
struct pixman_box32
{
int32_t x1, y1, x2, y2;
};
struct pixman_region32
{
pixman_box32_t extents;
pixman_region32_data_t *data;
};发布于 2018-09-05 21:27:24
它在pixman-region32.c中。您看不到它,因为这些函数是由PREFIX宏生成的,然后使用pixman-region.c中的代码。请看这里:
typedef pixman_box32_t box_type_t;
typedef pixman_region32_data_t region_data_type_t;
typedef pixman_region32_t region_type_t;
typedef int64_t overflow_int_t;
typedef struct {
int x, y;
} point_type_t;
#define PREFIX(x) pixman_region32##x
#define PIXMAN_REGION_MAX INT32_MAX
#define PIXMAN_REGION_MIN INT32_MIN
#include "pixman-region.c"它首先将PREFIX宏设为pixman_region32,然后从pixman-region.c导入代码。
https://stackoverflow.com/questions/48434760
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