+++ /dev/null
-/*
- * Acess GUI (AxWin) Version 2
- * By John Hodge (thePowersGang)
- */
-#include "common.h"
-#include <acess/sys.h>
-#include <acess/devices/terminal.h>
-#include <image.h>
-#include "resources/cursor.h"
-
-// === PROTOTYPES ===
-void Video_Setup(void);
-void Video_SetCursorPos(short X, short Y);
-void Video_Update(void);
-void Video_FillRect(short X, short Y, short W, short H, uint32_t Color);
-void Video_DrawRect(short X, short Y, short W, short H, uint32_t Color);
-
-// === GLOBALS ===
- int giVideo_CursorX;
- int giVideo_CursorY;
-
-// === CODE ===
-void Video_Setup(void)
-{
- int tmpInt;
-
- // Open terminal
- giTerminalFD = open(gsTerminalDevice, OPENFLAG_READ|OPENFLAG_WRITE);
- if( giTerminalFD == -1 )
- {
- fprintf(stderr, "ERROR: Unable to open '%s' (%i)\n", gsTerminalDevice, _errno);
- exit(-1);
- }
-
- // Set width
- tmpInt = giScreenWidth;
- tmpInt = ioctl( giTerminalFD, TERM_IOCTL_WIDTH, &tmpInt );
- if(tmpInt != giScreenWidth)
- {
- fprintf(stderr, "Warning: Selected width (%i) is invalid, clipped to %i\n",
- giScreenWidth, tmpInt);
- giScreenWidth = tmpInt;
- }
-
- // Set height
- tmpInt = giScreenHeight;
- tmpInt = ioctl( giTerminalFD, TERM_IOCTL_HEIGHT, &tmpInt );
- if(tmpInt != giScreenHeight)
- {
- fprintf(stderr, "Warning: Selected height (%i) is invalid, clipped to %i\n",
- giScreenHeight, tmpInt);
- giScreenHeight = tmpInt;
- }
-
- // Set mode to video
- tmpInt = TERM_MODE_FB;
- ioctl( giTerminalFD, TERM_IOCTL_MODETYPE, &tmpInt );
-
- // Force VT to be shown
- ioctl( giTerminalFD, TERM_IOCTL_FORCESHOW, NULL );
-
- // Create local framebuffer (back buffer)
- gpScreenBuffer = malloc( giScreenWidth*giScreenHeight*4 );
- memset32( gpScreenBuffer, 0x8888FF, giScreenWidth*giScreenHeight );
-
- // Set cursor position and bitmap
- ioctl(giTerminalFD, TERM_IOCTL_SETCURSORBITMAP, &cCursorBitmap);
- Video_SetCursorPos( giScreenWidth/2, giScreenHeight/2 );
-
- Video_Update();
-}
-
-void Video_Update(void)
-{
- //seek(giTerminalFD, 0, SEEK_SET);
- seek(giTerminalFD, 0, 1);
- write(giTerminalFD, gpScreenBuffer, giScreenWidth*giScreenHeight*4);
-}
-
-void Video_SetCursorPos(short X, short Y)
-{
- struct {
- uint16_t x;
- uint16_t y;
- } pos;
- pos.x = giVideo_CursorX = X;
- pos.y = giVideo_CursorY = Y;
- ioctl(giTerminalFD, TERM_IOCTL_GETSETCURSOR, &pos);
-}
-
-void Video_FillRect(short X, short Y, short W, short H, uint32_t Color)
-{
- uint32_t *buf = gpScreenBuffer + Y*giScreenWidth + X;
-
- _SysDebug("Video_FillRect: (X=%i, Y=%i, W=%i, H=%i, Color=%08x)",
- X, Y, W, H, Color);
-
- if(W < 0 || X < 0 || X >= giScreenWidth) return ;
- if(X + W > giScreenWidth) W = giScreenWidth - X;
-
- if(H < 0 || Y < 0 || Y >= giScreenHeight) return ;
- if(Y + H > giScreenHeight) H = giScreenHeight - Y;
-
- while( H -- )
- {
- memset32( buf, Color, W );
- buf += giScreenWidth;
- }
-}
-
-void Video_DrawRect(short X, short Y, short W, short H, uint32_t Color)
-{
- Video_FillRect(X, Y, W, 1, Color);
- Video_FillRect(X, Y+H-1, W, 1, Color);
- Video_FillRect(X, Y, 1, H, Color);
- Video_FillRect(X+W-1, Y, 1, H, Color);
-}
-
-/**
- * \brief Draw an image to the screen
- * \todo Maybe have support for an offset in the image
- */
-void Video_DrawImage(short X, short Y, short W, short H, tImage *Image)
-{
- int x, y;
- uint8_t *buf = (uint8_t *)(gpScreenBuffer + Y*giScreenWidth + X);
- uint8_t *data;
-
- // Sanity please
- if( !Image )
- return ;
-
- // Bounds Check
- if( X >= giScreenWidth ) return ;
- if( Y >= giScreenHeight ) return ;
-
- // Wrap to image size
- if( W > Image->Width ) W = Image->Width;
- if( H > Image->Height ) H = Image->Height;
-
- // Wrap to screen size
- if( X + W > giScreenWidth ) W = giScreenWidth - X;
- if( Y + H > giScreenHeight ) H = giScreenHeight - Y;
-
- // Do the render
- data = Image->Data;
- switch( Image->Format )
- {
- case IMGFMT_BGRA:
- for( y = 0; y < H; y ++ )
- {
- int r, g, b, a; // New
- int or, og, ob; // Original
- for( x = 0; x < W; x ++ )
- {
- b = data[x*4+0]; g = data[x*4+1]; r = data[x*4+2]; a = data[x*4+3];
- if( a == 0 ) continue; // 100% transparent
- ob = buf[x*4+0]; og = buf[x*4+1]; or = buf[x*4+2];
- // Handle Alpha
- switch(a)
- {
- // Transparent: Handled above
- // Solid
- case 0xFF: break;
- // Half
- case 0x80:
- r = (or + r) / 2;
- g = (og + g) / 2;
- b = (ob + b) / 2;
- break;
- // General
- default:
- r = (or * (255-a) + r * a) / 255;
- g = (og * (255-a) + g * a) / 255;
- b = (ob * (255-a) + b * a) / 255;
- break;
- }
- buf[x*4+0] = b; buf[x*4+1] = g; buf[x*4+2] = r;
- }
- data += Image->Width * 4;
- buf += giScreenWidth * 4;
- }
- break;
-
- // RGB
- case IMGFMT_RGB:
- for( y = 0; y < H; y ++ )
- {
- for( x = 0; x < W; x ++ )
- {
- buf[x*4+0] = data[x*3+2]; // Blue
- buf[x*4+1] = data[x*3+1]; // Green
- buf[x*4+2] = data[x*3+0]; // Red
- }
- data += W * 3;
- buf += giScreenWidth * 4;
- }
- break;
- default:
- _SysDebug("ERROR: Unknown image format %i\n", Image->Format);
- break;
- }
-}
git.ucc.asn.au / tpg / acess2.git / blobdiff
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