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Luma3DS-3GX/source/draw.c

110 lines
3.6 KiB
C

/*
* This file is part of Luma3DS
* Copyright (C) 2016 Aurora Wright, TuxSH
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Additional Terms 7.b of GPLv3 applies to this file: Requiring preservation of specified
* reasonable legal notices or author attributions in that material or in the Appropriate Legal
* Notices displayed by works containing it.
*/
/*
* Code to print to the screen by mid-kid @CakesFW
* https://github.com/mid-kid/CakesForeveryWan
*/
#include "draw.h"
#include "strings.h"
#include "screen.h"
#include "utils.h"
#include "fs.h"
#include "font.h"
bool loadSplash(void)
{
const char *topSplashFile = "splash.bin",
*bottomSplashFile = "splashbottom.bin";
bool isTopSplashValid = getFileSize(topSplashFile) == SCREEN_TOP_FBSIZE,
isBottomSplashValid = getFileSize(bottomSplashFile) == SCREEN_BOTTOM_FBSIZE;
//Don't delay boot nor init the screens if no splash images or invalid splash images are on the SD
if(!isTopSplashValid && !isBottomSplashValid) return false;
initScreens();
clearScreens(true);
if(isTopSplashValid) isTopSplashValid = fileRead(fbs[1].top_left, topSplashFile, SCREEN_TOP_FBSIZE) == SCREEN_TOP_FBSIZE;
if(isBottomSplashValid) isBottomSplashValid = fileRead(fbs[1].bottom, bottomSplashFile, SCREEN_BOTTOM_FBSIZE) == SCREEN_BOTTOM_FBSIZE;
if(!isTopSplashValid && !isBottomSplashValid) return false;
swapFramebuffers(true);
wait(false, 3ULL);
return true;
}
void drawCharacter(char character, bool isTopScreen, u32 posX, u32 posY, u32 color)
{
u8 *select = isTopScreen ? fbs[0].top_left : fbs[0].bottom;
for(u32 y = 0; y < 8; y++)
{
char charPos = font[character * 8 + y];
for(u32 x = 0; x < 8; x++)
if(((charPos >> (7 - x)) & 1) == 1)
{
u32 screenPos = (posX * SCREEN_HEIGHT * 3 + (SCREEN_HEIGHT - y - posY - 1) * 3) + x * 3 * SCREEN_HEIGHT;
select[screenPos] = color >> 16;
select[screenPos + 1] = color >> 8;
select[screenPos + 2] = color;
}
}
}
u32 drawString(const char *string, bool isTopScreen, u32 posX, u32 posY, u32 color)
{
for(u32 i = 0, line_i = 0; i < strlen(string); i++)
switch(string[i])
{
case '\n':
posY += SPACING_Y;
line_i = 0;
break;
case '\t':
line_i += 2;
break;
default:
//Make sure we never get out of the screen
if(line_i >= ((isTopScreen ? SCREEN_TOP_WIDTH : SCREEN_BOTTOM_WIDTH) - posX) / SPACING_X)
{
posY += SPACING_Y;
line_i = 1; //Little offset so we know the same string continues
if(string[i] == ' ') break; //Spaces at the start look weird
}
drawCharacter(string[i], isTopScreen, posX + line_i * SPACING_X, posY, color);
line_i++;
break;
}
return posY;
}