harmony 鸿蒙drawing_region.h

2025-06-12
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drawing_region.h

Overview

The drawing_region.h file declares the functions related to the region in the drawing module, including creating a region, setting the boundary, and destroying a region.

File to include: <native_drawing/drawing_region.h>

Library: libnative_drawing.so

Since: 12

Related module: Drawing

Summary

Types

Name	Description
typedef enum OH_Drawing_RegionOpMode OH_Drawing_RegionOpMode	Defines an enum for the operation modes available for a region.

Enums

Name	Description
OH_Drawing_RegionOpMode { REGION_OP_MODE_DIFFERENCE, REGION_OP_MODE_INTERSECT, REGION_OP_MODE_UNION, REGION_OP_MODE_XOR, REGION_OP_MODE_REVERSE_DIFFERENCE, REGION_OP_MODE_REPLACE }	Enumerates the operation modes available for a region.

Functions

Name	Description
OH_Drawing_Region * OH_Drawing_RegionCreate (void)	Creates an OH_Drawing_Region object for more accurate graphical control.
bool OH_Drawing_RegionContains (OH_Drawing_Region *region, int32_t x, int32_t y)	Checks whether a region contains the specified point.
bool OH_Drawing_RegionOp (OH_Drawing_Region region, const OH_Drawing_Region other, OH_Drawing_RegionOpMode op)	Combines two regions based on the specified operation mode.
bool OH_Drawing_RegionSetRect (OH_Drawing_Region region, const OH_Drawing_Rect rect)	Sets the boundary for an OH_Drawing_Region object.
bool OH_Drawing_RegionSetPath (OH_Drawing_Region region, const OH_Drawing_Path path, const OH_Drawing_Region *clip)	Sets a region to the area described by the path.
void OH_Drawing_RegionDestroy (OH_Drawing_Region *)	Destroys an OH_Drawing_Region object and reclaims the memory occupied by the object.