Browse code
Add source code of the XiPC emulator
Pawel Jablonski authored on 17/03/2023 16:46:08
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+/* |
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+ * Author: Pawel Jablonski |
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+ * E-mail: pj@xirx.net |
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+ * WWW: xirx.net |
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+ * GIT: git.xirx.net |
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+ * |
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+ * License: You can use this code however you like |
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+ * but leave information about the original author. |
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+ * Code is free for non-commercial and commercial use. |
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+ */ |
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+ |
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+#include "lcd.h" |
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+ |
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+/** |
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+ * Constructor for the LCD class |
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+ * |
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+ * @param parent Parent object |
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+ */ |
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+LCD::LCD(QObject *parent) : QObject(parent) |
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+{
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+ this->reset(); |
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+} |
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+ |
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+//! Reset the LCD buffers and clear the screen |
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+void LCD::reset() |
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+{
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+ this->clear(); |
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+ this->refresh(); |
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+} |
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+ |
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+//! Copy data from the canvas painting buffer to the ready to show buffer |
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+void LCD::refresh() |
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+{
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+ for(int i = 0; i < HEIGHT; i++) |
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+ {
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+ for(int j = 0; j < WIDTH; j++) |
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+ {
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+ this->buffer[1].charData[i][j] = this->buffer[0].charData[i][j]; |
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+ this->buffer[1].colorData[i][j] = this->buffer[0].colorData[i][j]; |
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+ } |
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+ } |
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+} |
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+ |
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+//! Clear the canvas painting buffer |
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+void LCD::clear() |
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+{
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+ for(int i = 0; i < HEIGHT; i++) |
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+ {
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+ for(int j = 0; j < WIDTH; j++) |
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+ {
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+ this->buffer[0].charData[i][j] = 0; |
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+ this->buffer[0].colorData[i][j] = 0; |
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+ } |
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+ } |
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+} |
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+ |
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+/** |
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+ * Set char in the buffer |
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+ * |
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+ * @param c Char to set |
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+ * @param x Horizontal position in range 0-WIDTH |
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+ * @param y Vertical position in range 0-HEIGHT |
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+ * @param charColor Foreground color code in range 0-15 |
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+ * @param backgroundColor Background color code in range 0-15 |
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+ */ |
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+void LCD::setChar(unsigned char c, int x, int y, unsigned char charColor, unsigned char backgroundColor) |
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+{
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+ if((x >= 0) && (x < WIDTH) && (y >= 0) && (y < HEIGHT)) |
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+ {
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+ this->buffer[0].charData[y][x] = c; |
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+ this->buffer[0].colorData[y][x] = static_cast<unsigned char>((charColor & COLOR_MASK) | ((backgroundColor & COLOR_MASK) << 4)); |
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+ } |
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+} |
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+ |
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+//! Scroll the canvas painting buffer one line up |
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+void LCD::scroll() |
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+{
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+ for(int y = 0; y < (HEIGHT - 1); y++) |
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+ {
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+ for(int x = 0; x < WIDTH; x++) |
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+ {
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+ this->buffer[0].charData[y][x] = this->buffer[0].charData[y + 1][x]; |
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+ this->buffer[0].colorData[y][x] = this->buffer[0].colorData[y + 1][x]; |
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+ } |
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+ } |
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+ |
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+ for(int x = 0; x < WIDTH; x++) |
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+ {
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+ this->buffer[0].charData[HEIGHT - 1][x] = 0; |
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+ this->buffer[0].colorData[HEIGHT - 1][x] = 0; |
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+ } |
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+} |
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+ |
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+//! Emit the update signal with ready to show buffer data |
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+void LCD::update() |
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+{
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+ emit updateBufferSignal(this->buffer[1]); |
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+} |