74 lines
2.7 KiB
Ada
74 lines
2.7 KiB
Ada
with SDL.Video.Windows.Makers;
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with SDL.Video.Renderers.Makers;
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with SDL.Video.Palettes;
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with SDL.Events.Events;
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procedure Colour_Pinstripe_Display is
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Width : constant := 1_200;
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Height : constant := 800;
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Window : SDL.Video.Windows.Window;
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Renderer : SDL.Video.Renderers.Renderer;
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Event : SDL.Events.Events.Events;
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procedure Draw_Pinstripe (Line_Width : in Integer;
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Line_Height : in Integer;
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Screen_Width : in Integer;
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Y : in Integer)
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is
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type Colour_Range is (Black, Red, Green, Blue, Magenta, Cyan, Yellow, White);
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Colours : constant array (Colour_Range) of SDL.Video.Palettes.Colour
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:= (Black => (0, 0, 0, 255), Red => (255, 0, 0, 255),
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Green => (0, 255, 0, 255), Blue => (0, 0, 255, 255),
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Magenta => (255, 0, 255, 255), Cyan => (0, 255, 255, 255),
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Yellow => (255, 255, 0, 255), White => (255, 255, 255, 255));
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Col : Colour_Range := Colour_Range'First;
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Count : constant Integer := Screen_Width / Line_Width;
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begin
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for A in 0 .. Count loop
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Renderer.Set_Draw_Colour (Colour => Colours (Col));
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Renderer.Fill (Rectangle => (X => SDL.C.int (A * Line_Width), Y => SDL.C.int (Y),
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Width => SDL.C.int (Line_Width),
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Height => SDL.C.int (Line_Height)));
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Col := (if Col = Colour_Range'Last
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then Colour_Range'First
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else Colour_Range'Succ (Col));
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end loop;
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end Draw_Pinstripe;
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procedure Wait is
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use type SDL.Events.Event_Types;
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begin
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loop
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while SDL.Events.Events.Poll (Event) loop
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if Event.Common.Event_Type = SDL.Events.Quit then
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return;
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end if;
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end loop;
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delay 0.100;
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end loop;
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end Wait;
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begin
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if not SDL.Initialise (Flags => SDL.Enable_Screen) then
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return;
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end if;
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SDL.Video.Windows.Makers.Create (Win => Window,
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Title => "Pinstripe",
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Position => SDL.Natural_Coordinates'(X => 10, Y => 10),
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Size => SDL.Positive_Sizes'(Width, Height),
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Flags => 0);
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SDL.Video.Renderers.Makers.Create (Renderer, Window.Get_Surface);
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Draw_Pinstripe (1, Height / 4, Width, 0);
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Draw_Pinstripe (2, Height / 4, Width, 200);
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Draw_Pinstripe (3, Height / 4, Width, 400);
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Draw_Pinstripe (4, Height / 4, Width, 600);
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Window.Update_Surface;
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Wait;
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Window.Finalize;
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SDL.Finalise;
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end Colour_Pinstripe_Display;
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