c744f5a467
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@1437 8e941d3f-bd1b-0410-a28a-d453659cc2b4
109 lines
3.3 KiB
ObjectPascal
109 lines
3.3 KiB
ObjectPascal
(*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*)
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unit native_window;
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interface
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uses ctypes,rect;
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(*
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* Pixel formats that a window can use.
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*)
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const
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WINDOW_FORMAT_RGBA_8888 = 1;
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WINDOW_FORMAT_RGBX_8888 = 2;
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WINDOW_FORMAT_RGB_565 = 4;
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type
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PANativeWindow = ^ANativeWindow;
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ANativeWindow = record end;
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PANativeWindow_Buffer = ^ANativeWindow_Buffer;
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ANativeWindow_Buffer = packed record
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// The number of pixels that are show horizontally.
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width : cint32;
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// The number of pixels that are shown vertically.
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height : cint32;
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// The number of *pixels* that a line in the buffer takes in
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// memory. This may be >= width.
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stride : cint32;
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// The format of the buffer. One of WINDOW_FORMAT_*
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format : cint32;
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// The actual bits.
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bits : Pointer;
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// Do not touch.
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reserved : array [0..5] of cuint32;
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end;
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(**
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* Acquire a reference on the given ANativeWindow object. This prevents the object
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* from being deleted until the reference is removed.
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*)
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procedure ANativeWindow_acquire(window: PANativeWindow); cdecl; external;
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(**
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* Remove a reference that was previously acquired with ANativeWindow_acquire().
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*)
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procedure ANativeWindow_release(window: PANativeWindow); cdecl; external;
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(*
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* Return the current width in pixels of the window surface. Returns a
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* negative value on error.
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*)
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function ANativeWindow_getWidth(window: PANativeWindow): cint32; cdecl; external;
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(*
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* Return the current height in pixels of the window surface. Returns a
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* negative value on error.
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*)
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function ANativeWindow_getHeight(window: PANativeWindow): cint32; cdecl; external;
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(*
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* Return the current pixel format of the window surface. Returns a
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* negative value on error.
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*)
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function ANativeWindow_getFormat(window: PANativeWindow): cint32; cdecl; external;
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(*
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* Change the format and size of the window buffers.
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*
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* The width and height control the number of pixels in the buffers, not the
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* dimensions of the window on screen. If these are different than the
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* window's physical size, then it buffer will be scaled to match that size
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* when compositing it to the screen.
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*
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* For all of these parameters, if 0 is supplied then the window's base
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* value will come back in force.
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*)
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function ANativeWindow_setBuffersGeometry(window: PANativeWindow; width, height, format: cint32): cint32; cdecl; external;
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(**
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* Lock the window's next drawing surface for writing.
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*)
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function ANativeWindow_lock(window: PANativeWindow; outBuffer: PANativeWindow_Buffer; inOutDirtyBounds: PARect): cint32; cdecl; external;
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(**
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* Unlock the window's drawing surface after previously locking it,
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* posting the new buffer to the display.
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*)
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function ANativeWindow_unlockAndPost(window: PANativeWindow): cint32; cdecl; external;
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implementation
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end.
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