331 lines
11 KiB
C
331 lines
11 KiB
C
#include <kernel/chroma.h>
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#include <kernel/video/bitmapfont.h>
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/************************
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*** Team Kitty, 2020 ***
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*** Chroma ***
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***********************/
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/* This file contains all of the draw-to-screen routines.
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* It (currently; 23/08/20) handles the keyboard input test routine,
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* moving the current character back and forth, up and down.
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*
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* It also handles filling the screen with color in the case of an event,
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* and will be hooked into Vector and Shape of lainlib to eventually provide
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* geometry.
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*
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* It will also eventually be plugged into stb_image to provide a way to draw PNGs
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* and JPGs from disk.
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*/
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#define FONT bitfont_latin
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static size_t strlen(const char* String) {
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size_t Len = 0;
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while(String[Len] != '\0') {
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Len++;
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}
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return Len;
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}
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typedef struct {
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uint32_t charHeight;
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uint32_t charWidth;
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uint32_t charFGColor;
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uint32_t charHLColor;
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uint32_t charBGColor;
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uint32_t minX;
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uint32_t minY;
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uint32_t charScale;
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size_t charPosX;
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size_t charPosY;
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size_t charsPerRow;
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size_t rowsPerScrn;
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uint32_t scrlMode;
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} PRINTINFO;
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static PRINTINFO PrintInfo = {0};
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void InitPrint() {
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PrintInfo.charHeight = 8;
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PrintInfo.charWidth = 8;
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PrintInfo.charFGColor = 0x00FFFFFF;
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PrintInfo.charHLColor = 0x00000000;
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PrintInfo.charBGColor = 0x00000000;
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PrintInfo.charScale = 1;
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PrintInfo.charPosX = 1;
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PrintInfo.charPosY = 2;
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PrintInfo.scrlMode = 0;
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PrintInfo.charsPerRow = bootldr.fb_width / (PrintInfo.charScale * PrintInfo.charWidth) - 4;
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PrintInfo.rowsPerScrn = bootldr.fb_height / (PrintInfo.charScale * PrintInfo.charHeight);
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SerialPrintf("[Print] A single character is %ux%u pixels.\r\n", PrintInfo.charScale * PrintInfo.charWidth, PrintInfo.charScale * PrintInfo.charHeight);
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SerialPrintf("[Print] The screen is %ux%u, meaning you can fit %ux%u characters on screen.\r\n", bootldr.fb_width, bootldr.fb_height, PrintInfo.charsPerRow, PrintInfo.rowsPerScrn);
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WriteString("Testing print\n");
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}
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static void DrawChar(const char character, size_t x, size_t y) {
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x = x + PrintInfo.charPosX * (PrintInfo.charScale * PrintInfo.charWidth);
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y = y + PrintInfo.charPosY * (PrintInfo.charScale * PrintInfo.charHeight);
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uint32_t Y = PrintInfo.charWidth >> 3, X = 0;
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if((PrintInfo.charWidth & 0x7) != 0) {
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Y++;
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}
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for(uint32_t Row = 0; Row < PrintInfo.charHeight; Row++) {
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for(uint32_t Bit = 0; Bit < PrintInfo.charWidth; Bit++) {
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if ( ((Bit & 0x7) == 0) && (Bit > 0)) {
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X++;
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}
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// This one is crazy. Stick with me.
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if((FONT[(int)character][Row * Y + X] >> (Bit & 0x7)) & 1) { // Check the bit in the bitmap, if it's solid..
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for(uint32_t ScaleY = 0; ScaleY < PrintInfo.charScale; ScaleY++) { // Take care of the scale height
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for(uint32_t ScaleX = 0; ScaleX < PrintInfo.charScale; ScaleX++) { // And the scale width
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size_t offset = ((y * bootldr.fb_width + x) + // Calculate the offset from the framebuffer
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PrintInfo.charScale * (Row * bootldr.fb_width + Bit) + // With the appropriate scale
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(ScaleY * bootldr.fb_width + ScaleX) + // In X and Y
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PrintInfo.charScale * 1 * PrintInfo.charWidth) - 10; // With some offset to start at 0
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*(uint32_t* )(&fb + offset * 4) // And use it to set the correct pixel on the screen
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= PrintInfo.charFGColor; // In the set foreground color
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}
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}
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} else {
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// We need to draw the pixel transparently, using the background color
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for(uint32_t ScaleY = 0; ScaleY < PrintInfo.charScale; ScaleY++) {
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for(uint32_t ScaleX = 0; ScaleX < PrintInfo.charScale; ScaleX++) {
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if(PrintInfo.charHLColor != 0xFF000000) {
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size_t offset = ((y * bootldr.fb_width + x) +
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PrintInfo.charScale * (Row * bootldr.fb_width + Bit) +
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(ScaleY * bootldr.fb_width + ScaleX) +
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PrintInfo.charScale * 1 * PrintInfo.charWidth) - 10;
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if( y == 0 && x == 0){
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//SerialPrintf("Writing first pixel at %x\r\n", offset);
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}
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*(uint32_t*)(&fb + offset *4)
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= PrintInfo.charHLColor;
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}
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}
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}
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}
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}
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}
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/*
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uint32_t Y = PrintInfo.charWidth >> 3, X = 0;
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if((PrintInfo.charWidth & 0x7) != 0) {
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Y++;
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}
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for(size_t CharRow = 0; CharRow < PrintInfo.charHeight; CharRow++) {
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for(size_t CharPixel = 0; CharPixel < PrintInfo.charWidth; CharPixel++) {
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if( CharPixel && (CharPixel & 0x7) == 0) {
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X++;
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}
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for(size_t ScaleX = 0; ScaleX < PrintInfo.charScale; ScaleX++) {
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for(size_t ScaleY = 0; ScaleY < PrintInfo.charScale; ScaleY++) {
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if(FONT[character][CharRow * Y + X] >> (CharRow & 0x7) & 1) {
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size_t offset = (y * bootldr.fb_width + x) +
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(PrintInfo.charScale * (CharRow * bootldr.fb_width + CharPixel)) +
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(ScaleY * (bootldr.fb_width + ScaleX));
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*((uint32_t*) (&fb + offset * 4))
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= PrintInfo.charFGColor;
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//DrawPixel(x * PrintInfo.charWidth + X, Y + y + PrintInfo.charHeight, 0x00FF0000);
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}
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}
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}
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}
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}
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uint32_t Y = PrintInfo.charWidth >> 3, X = 0;
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if((PrintInfo.charWidth & 0x7) != 0) {
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Y++;
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}
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for(uint32_t Row = 0; Row < PrintInfo.charHeight; Row++) {
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for(uint32_t Bit = 0; Bit < PrintInfo.charWidth; Bit++) {
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if( ((Bit & 0x7) == 0) && (Bit > 0))
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X++;
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for(uint32_t ScaleY = 0; ScaleY < PrintInfo.charScale; ScaleY++) {
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for(uint32_t ScaleX = 0; ScaleX < PrintInfo.charScale; ScaleX++) {
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if((FONT[character][Row * Y + X] >> (Bit & 0x7)) & 1) {
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size_t offset = (y * bootldr.fb_width + x) +
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(PrintInfo.charScale * (Row * bootldr.fb_width + Bit)) +
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(ScaleY * (bootldr.fb_width + ScaleX));
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SerialPrintf("Drawing pixel at offset %x, at y %d, x %d, row %d, bit %d with scaley %d and scalex %d. charScale %d and charWidth %d, making a charLength %d.\r\n", offset, y, x, Row, Bit, ScaleX, ScaleY, PrintInfo.charScale, PrintInfo.charWidth, PrintInfo.charScale * PrintInfo.charWidth);
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*((uint32_t*) (&fb + offset * 4))
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= PrintInfo.charFGColor;
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} else {
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if(PrintInfo.charHLColor != 0xFF000000) {
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size_t offset = (y * bootldr.fb_width + x) +
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(PrintInfo.charScale * (Row * bootldr.fb_width + Bit)) +
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(ScaleY * (bootldr.fb_width + ScaleX));
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SerialPrintf("Drawing pixel at offset %x\r\n", offset);
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*((uint32_t*) (&fb + offset * 4))
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= PrintInfo.charHLColor;
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}
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}
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}
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}
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}
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}
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*/
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}
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void DrawPixel(uint32_t x, uint32_t y, uint32_t color) {
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if(x > bootldr.fb_width) {
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DrawPixel(x - bootldr.fb_width, y + (PrintInfo.charHeight * PrintInfo.charScale), color);
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//FillScreen(color);
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} else if(y > bootldr.fb_height) {
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DrawPixel(x, y - bootldr.fb_height, color);
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} else {
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*((uint32_t*) (&fb + (y * bootldr.fb_width + x) * 4)) = color;
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//SerialPrintf("Drawing a pixel at %d, %d with color 0x%x\r\n", x, y, color);
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}
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}
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void FillScreen(uint32_t color) {
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for(size_t y = 0; y < bootldr.fb_height; y++) {
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for(size_t x = 0; x < bootldr.fb_width; x++) {
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DrawPixel(x, y, color);
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}
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}
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}
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static void ProgressCursorS(size_t Steps) {
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if(PrintInfo.charPosX + Steps > PrintInfo.charsPerRow) {
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PrintInfo.charPosX = 0;
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size_t Rows = Steps / PrintInfo.charsPerRow;
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if(PrintInfo.charPosY + Rows > PrintInfo.rowsPerScrn) {
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size_t RowsLeft = PrintInfo.rowsPerScrn - PrintInfo.charPosY;
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ProgressCursorS((Rows - RowsLeft) * PrintInfo.charsPerRow);
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} else {
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PrintInfo.charPosY++;
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}
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} else {
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PrintInfo.charPosX += Steps;
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}
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}
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static void Newline() {
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ProgressCursorS(PrintInfo.charsPerRow);
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}
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static void ProgressCursor() {
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ProgressCursorS(1);
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}
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static void Backspace() {
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SerialPrintf("Backspacing from %d to %d\r\n", PrintInfo.charPosX, PrintInfo.charPosX - 1);
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if(PrintInfo.charPosX - 1 <= 0) {
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if(PrintInfo.charPosY - 1 <= 0) {
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PrintInfo.charPosY = 0;
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} else {
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PrintInfo.charPosY--;
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}
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PrintInfo.charPosX = 0;
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} else {
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PrintInfo.charPosX -= 1;
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}
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}
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void WriteChar(const char character) {
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//size_t y = PrintInfo.charPos / RowsWidth * (PrintInfo.charScale * PrintInfo.charHeight);
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//size_t x = (PrintInfo.charPos % RowsWidth) * (PrintInfo.charScale * PrintInfo.charWidth);
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switch(character) {
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case '\b':
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Backspace();
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DrawChar((char) 32, PrintInfo.charPosX, PrintInfo.charPosY);
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break;
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case '\n':
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Newline();
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break;
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case '\t':
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ProgressCursorS(4);
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break;
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default:
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DrawChar(character, PrintInfo.charPosX, PrintInfo.charPosY);
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ProgressCursor();
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break;
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}
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}
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void WriteString(const char* string) {
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for(unsigned int i = 0; i < strlen(string); i++) {
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WriteChar(string[i]);
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}
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}
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void WriteStringWithFont(const char *inChar)
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{
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psf_t *font = (psf_t*) &_binary_font_psf_start;
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unsigned int drawX, drawY, kx = 0, fontLine, bitMask, offset;
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const unsigned int bytesPerLine = ( font -> glyphWidth + 7 ) / 8;
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while(*inChar) {
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unsigned char *glyph =
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(unsigned char*) &_binary_font_psf_start
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+ font->headerSize
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+ (*inChar > 0 && *inChar < (int)font->numGlyphs ? *inChar : 0)
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* font->glyphSize;
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offset = (kx * (font->glyphWidth + 1) * 4);
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for( drawY = 0; drawY < font->glyphHeight ; drawY++) {
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fontLine = offset;
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bitMask = 1 << (font->glyphWidth - 1);
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for( drawX = 0; drawX < font->glyphWidth; drawX++) {
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*((uint32_t*)((uint64_t) &fb + fontLine)) =
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((int) *glyph) & (bitMask) ? 0xFFFFFF : 0;
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bitMask >>= 1;
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fontLine += 4;
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}
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*((uint32_t*)((uint64_t) &fb + fontLine)) = 0;
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glyph += bytesPerLine;
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offset += bootldr.fb_scanline;
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}
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inChar++; kx++;
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}
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}
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