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src/hal/hal-framebuffer.ads
128 строк
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sunfmoon
Initial commit: added Morse code simulator for STM32F411
21 май 2026, 13:20
21 май 2026, 13:20
dd58322
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------------------------------------------------------------------------------ -- -- -- Copyright (C) 2015-2016, AdaCore -- -- -- -- Redistribution and use in source and binary forms, with or without -- -- modification, are permitted provided that the following conditions are -- -- met: -- -- 1. Redistributions of source code must retain the above copyright -- -- notice, this list of conditions and the following disclaimer. -- -- 2. Redistributions in binary form must reproduce the above copyright -- -- notice, this list of conditions and the following disclaimer in -- -- the documentation and/or other materials provided with the -- -- distribution. -- -- 3. Neither the name of the copyright holder nor the names of its -- -- contributors may be used to endorse or promote products derived -- -- from this software without specific prior written permission. -- -- -- -- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -- -- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -- -- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -- -- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -- -- HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -- -- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -- -- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -- -- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -- -- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -- -- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -- -- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -- -- -- ------------------------------------------------------------------------------ with HAL.Bitmap; package HAL.Framebuffer is pragma Preelaborate; subtype FB_Color_Mode is HAL.Bitmap.Bitmap_Color_Mode range HAL.Bitmap.ARGB_8888 .. HAL.Bitmap.M_1; type Display_Orientation is (Default, Landscape, Portrait); type Wait_Mode is (Polling, Interrupt); type Frame_Buffer_Display is limited interface; type Any_Frame_Buffer_Display is access all Frame_Buffer_Display'Class; function Max_Layers (This : Frame_Buffer_Display) return Positive is abstract; function Supported (This : Frame_Buffer_Display; Mode : FB_Color_Mode) return Boolean is abstract; procedure Set_Orientation (This : in out Frame_Buffer_Display; Orientation : Display_Orientation) is abstract; procedure Set_Mode (This : in out Frame_Buffer_Display; Mode : Wait_Mode) is abstract; function Initialized (This : Frame_Buffer_Display) return Boolean is abstract; function Width (This : Frame_Buffer_Display) return Positive is abstract; function Height (This : Frame_Buffer_Display) return Positive is abstract; function Swapped (This : Frame_Buffer_Display) return Boolean is abstract; -- Whether X/Y coordinates are considered Swapped by the drawing primitives -- This simulates Landscape/Portrait orientation on displays not supporting -- hardware orientation change. procedure Set_Background (This : Frame_Buffer_Display; R, G, B : UInt8) is abstract; procedure Initialize_Layer (This : in out Frame_Buffer_Display; Layer : Positive; Mode : FB_Color_Mode; X : Natural := 0; Y : Natural := 0; Width : Positive := Positive'Last; Height : Positive := Positive'Last) is abstract; -- All layers are double buffered, so an explicit call to Update_Layer -- needs to be performed to actually display the current buffer attached -- to the layer. -- Alloc is called to create the actual buffer. function Initialized (This : Frame_Buffer_Display; Layer : Positive) return Boolean is abstract; procedure Update_Layer (This : in out Frame_Buffer_Display; Layer : Positive; Copy_Back : Boolean := False) is abstract; -- Updates the layer so that the hidden buffer is displayed. procedure Update_Layers (This : in out Frame_Buffer_Display) is abstract; -- Updates all initialized layers at once with their respective hidden -- buffer. function Color_Mode (This : Frame_Buffer_Display; Layer : Positive) return FB_Color_Mode is abstract; -- Retrieves the current color mode for the layer. function Hidden_Buffer (This : in out Frame_Buffer_Display; Layer : Positive) return not null HAL.Bitmap.Any_Bitmap_Buffer is abstract; -- Retrieves the current hidden buffer for the layer. function Pixel_Size (Display : Frame_Buffer_Display; Layer : Positive) return Positive is abstract; -- Retrieves the current hidden buffer for the layer. end HAL.Framebuffer;