DrawWindowEvent

class DrawWindowEvent : public HPS::DriverEvent

The DrawWindowEvent class is the event generated when the driver draws the window background for each subwindow.

Public Types

enum class BackgroundTextureFormat

Enumerates the various texture formats supported by the DrawTexturedBackground function .

Values:

enumerator RGBA

Handle to single GL_RGBA format texture.

enumerator BGRA

Same as RGBA but with swapped red and blue channels.

enumerator ImageExternal

Handle to single OES_EGL_image_external texture.

enumerator LumaChromaPair

Pointer to array of two texture handles for a YCbCr texture pair (For OpenGL ES, the formats should be GL_LUMINANCE and GL_LUMINANCE_ALPHA. For Metal, the formats should be MTLPixelFormatR8Unorm and MTLPixelFormatRG8Unorm).

Public Functions

void DrawTexturedBackground(OpaqueHandle in_texture, BackgroundTextureFormat in_format, MatrixKit const &in_matrix, IntRectangle const &in_extent) const

Function for drawing a platform-specific texture in place of the normal window background.

Parameters:

  • in_texture – The platform-specific texture handle(s)

  • in_format – The format of the texture(s) provided through the ‘in_texture’ parameter.

  • in_matrix – A transformation to apply to the uv coordinates used to draw the texture to the window.

  • in_extent – The screen extent for the window background to be drawn.

DrawWindowEvent(OpaqueHandle in_nr = 0)
virtual ~DrawWindowEvent()

The screen extent for the window being drawn.

Public Members

IntRectangle Extent