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Allow user to connect multiple screen.
uLCD_Multiscreen/VirtualScreen.h
- Committer:
- Ratchapong
- Date:
- 2015-03-11
- Revision:
- 0:052d0f82433e
File content as of revision 0:052d0f82433e:
#ifndef VIRTUALSCREEN_H #define VIRTUALSCREEN_H #include "ScreenUpdater.h" #include "Command.h" #include "DrawPixel.h" #include "ClearScreen.h" #include "BackgroundColor.h" #include "Reset.h" #include "BaudRate.h" #include "Blit.h" #include "mbed.h" /** * Class represents a virtual screen of arbitrary size. To keep simplicity, screen data should be kept * in a pixel format where it can be read by physical devices. */ template <class pixelType, class screenType> class VirtualScreen { private: std::vector<screenType*> screens; std::vector<ScreenUpdater*> updaters; int rows; int columns; int screenSize; public: /** * Creates a virtual screen of size rows * columns. This screen is partitioned into different physical * screens. Writing pixels into this screen will transparently write into * these separate screens. * * @param screens A vector of physical screens to be used for drawing on. * @param rows The number of rows in the virtual screen. * @param columns The number of columns in the virtual screen. */ VirtualScreen<pixelType, screenType>(std::vector<screenType*> screens, int rows, int columns) { printf("Virtual Screen Booting."); this->screens = screens; for (typename std::vector<screenType*>::iterator scr_iter = screens.begin(); scr_iter != screens.end(); scr_iter++) { ScreenUpdater *updater = new ScreenUpdater(*scr_iter); updaters.push_back(updater); } this->rows = rows; this->columns = columns; this->screenSize = 128; } ~VirtualScreen<pixelType, screenType>() { for (typename std::vector<ScreenUpdater*>::iterator updater_iter = updaters.begin(); updater_iter != updaters.end(); updater_iter++) { delete (*updater_iter); } } /** * Writes a pixel value into the virtual screen at (row, column) index. * * @param x The row to write the pixel to. * @param y The column to write the pixel to. * @param value The value to write to the pixel. */ void setPixel(int x, int y, pixelType value) { //printf("Set pixel on row %d, col %d, val %d\n", x, y, value); int screen_number = x / screenSize; int x_pixel = x % screenSize; //printf("Predicting screen %d, at col %d\n", screen_number, x_pixel); ScreenUpdater* updater = updaters.at(screen_number); //printf("Updater made.\n"); Command *command = new DrawPixel(x_pixel, y, value); //printf("Adding command.\n"); updater->addCommand(command); } /** * Clears the screens of all attached screens. */ void clearScreen() { for (typename std::vector<ScreenUpdater*>::iterator updater_iter = updaters.begin(); updater_iter != updaters.end(); updater_iter++) { Command* command = new ClearScreen(); (*updater_iter)->addCommand(command); } } /** * Resets the screens of all attached screens. */ void resetScreen() { for (typename std::vector<ScreenUpdater*>::iterator updater_iter = updaters.begin(); updater_iter != updaters.end(); updater_iter++) { Command* command = new Reset(); (*updater_iter)->addCommand(command); } } /** * Sets the baud rate for all screens. * * @param rate The desired baud rate. */ void setBaudRate(int rate) { for (typename std::vector<ScreenUpdater*>::iterator updater_iter = updaters.begin(); updater_iter != updaters.end(); updater_iter++) { Command* command = new BaudRate(rate); (*updater_iter)->addCommand(command); } } /** * draw a block of pixels */ void BLIT(int x, int y, int w, int h, int *colors) { for (typename std::vector<ScreenUpdater*>::iterator updater_iter = updaters.begin(); updater_iter != updaters.end(); updater_iter++) { Command* command = new Blit(x,y,w,h,colors); (*updater_iter)->addCommand(command); } } /** * Sets the background color for all screens. * * @param color The color of the desired background. */ void background_color(int color) { for (typename std::vector<ScreenUpdater*>::iterator updater_iter = updaters.begin(); updater_iter != updaters.end(); updater_iter++) { Command* command = new BackgroundColor(color); (*updater_iter)->addCommand(command); } } }; #endif