304 lines
8.5 KiB
C
304 lines
8.5 KiB
C
str screen_namespace = "/dev/screen/0";
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str mouse_namespace = "/dev/mouse/0";
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byte BLACK = 0;
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byte WHITE = 255;
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byte DARK_GRAY = 73;
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byte GRAY = 146;
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byte LIGHT_GRAY = 182;
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byte CHARCOAL = 36;
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byte DARK_RED = 128;
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byte RED = 224;
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byte DARK_YELLOW = 144;
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byte YELLOW = 252;
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byte DARK_TEAL = 9;
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byte TEAL = 18;
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byte DARK_GREEN = 12;
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byte GREEN = 16;
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byte LIME = 28;
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byte LIGHT_CYAN = 159;
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byte NAVY = 2;
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byte BLUE = 3;
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byte DEEP_SKY_BLUE = 10;
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byte LIGHT_BLUE = 19;
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byte PURPLE = 131;
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byte LIGHT_PURPLE = 147;
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byte DARK_MAGENTA = 130;
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byte MAGENTA = 227;
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byte PLUM = 129;
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byte PINK = 226;
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byte SADDLE_BROWN = 72;
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byte PERU = 141;
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byte SIENNA = 136;
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byte ORANGE = 241;
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byte DARK_ORANGE = 208;
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byte GOLD = 244;
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byte SELECTED_COLOR = 255;
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function main () {
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// Open screen
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ptr screen;
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str screen_name;
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int mode;
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nat screen_buffer;
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// use load immediate because it a pointer to a string, not a value
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load_address screen_namespace -> screen_name;
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load_immediate 0 -> mode;
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syscall OPEN screen_name mode screen; // Screen screen = open("/dev/screen/0", 0);
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nat width;
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nat size;
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load_offset_32 screen 8 -> width; // load width
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load_offset_32 screen 12 -> size; // load size
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nat offset;
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load_immediate 16 -> offset; // offset for screen buffer
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add_nat screen offset -> screen_buffer;
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// open mouse
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ptr mouse;
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str mouse_name;
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load_address mouse_namespace -> mouse_name;
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syscall OPEN mouse_name mode mouse; // Mouse mouse = open("/dev/mouse/0", 0);
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byte color;
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nat x_pos;
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nat y_pos;
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load_absolute_8 BLACK -> color;
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load_immediate 1 -> x_pos;
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load_immediate 1 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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load_absolute_8 WHITE -> color;
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load_immediate 21 -> x_pos;
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load_immediate 1 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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load_absolute_8 CHARCOAL -> color;
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load_immediate 1 -> x_pos;
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load_immediate 21 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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load_absolute_8 DARK_GRAY -> color;
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load_immediate 21 -> x_pos;
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load_immediate 21 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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load_absolute_8 RED -> color;
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load_immediate 1 -> x_pos;
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load_immediate 41 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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load_absolute_8 ORANGE -> color;
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load_immediate 21 -> x_pos;
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load_immediate 41 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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load_absolute_8 YELLOW -> color;
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load_immediate 1 -> x_pos;
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load_immediate 61 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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load_absolute_8 GREEN -> color;
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load_immediate 21 -> x_pos;
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load_immediate 61 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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load_absolute_8 BLUE -> color;
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load_immediate 1 -> x_pos;
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load_immediate 81 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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load_absolute_8 PURPLE -> color;
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load_immediate 21 -> x_pos;
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load_immediate 81 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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// screen.draw
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syscall WRITE screen screen_buffer size;
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nat zero;
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load_immediate 0 -> zero;
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loop draw_loop {
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// load mouse click data
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syscall REFRESH mouse;
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byte left_down;
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load_offset_8 mouse 16 -> left_down; // load btn1 pressed
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jump_eq_nat draw_loop left_down zero; // if (!btn1.left) continue;
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nat mouse_x;
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nat mouse_y;
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load_offset_32 mouse 8 -> mouse_x; // load x
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load_offset_32 mouse 12 -> mouse_y; // load y
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nat box_size;
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load_immediate 20 -> box_size;
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// first row
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load_absolute_8 BLACK -> color;
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load_immediate 1 -> x_pos;
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load_immediate 1 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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call set_color_if_clicked (mouse_x mouse_y x_pos y_pos color box_size);
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load_absolute_8 WHITE -> color;
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load_immediate 21 -> x_pos;
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load_immediate 1 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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call set_color_if_clicked (mouse_x mouse_y x_pos y_pos color box_size);
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load_absolute_8 CHARCOAL -> color;
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load_immediate 1 -> x_pos;
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load_immediate 21 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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call set_color_if_clicked (mouse_x mouse_y x_pos y_pos color box_size);
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load_absolute_8 DARK_GRAY -> color;
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load_immediate 21 -> x_pos;
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load_immediate 21 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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call set_color_if_clicked (mouse_x mouse_y x_pos y_pos color box_size);
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load_absolute_8 RED -> color;
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load_immediate 1 -> x_pos;
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load_immediate 41 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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call set_color_if_clicked (mouse_x mouse_y x_pos y_pos color box_size);
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load_absolute_8 ORANGE -> color;
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load_immediate 21 -> x_pos;
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load_immediate 41 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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call set_color_if_clicked (mouse_x mouse_y x_pos y_pos color box_size);
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load_absolute_8 YELLOW -> color;
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load_immediate 1 -> x_pos;
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load_immediate 61 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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call set_color_if_clicked (mouse_x mouse_y x_pos y_pos color box_size);
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load_absolute_8 GREEN -> color;
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load_immediate 21 -> x_pos;
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load_immediate 61 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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call set_color_if_clicked (mouse_x mouse_y x_pos y_pos color box_size);
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load_absolute_8 BLUE -> color;
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load_immediate 1 -> x_pos;
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load_immediate 81 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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call set_color_if_clicked (mouse_x mouse_y x_pos y_pos color box_size);
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load_absolute_8 PURPLE -> color;
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load_immediate 21 -> x_pos;
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load_immediate 81 -> y_pos;
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call draw_outlined_swatch (screen_buffer color x_pos y_pos width);
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call set_color_if_clicked (mouse_x mouse_y x_pos y_pos color box_size);
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syscall WRITE screen screen_buffer size;
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byte selected_color;
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load_absolute_8 SELECTED_COLOR -> selected_color;
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nat brush_size;
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load_immediate 5 -> brush_size;
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call draw_box (screen_buffer width selected_color mouse_x mouse_y brush_size brush_size);
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jump draw_loop;
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}
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// Flush and exit
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exit 0;
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}
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function set_color_if_clicked (int click_x, int click_y, int box_x, int box_y, byte check_color, int size) {
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// Compute right
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int right_edge;
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add_int box_x size -> right_edge;
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// Compute bottom = box_y + size
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int bottom_edge;
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add_int box_y size -> bottom_edge;
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// Bounds check: x in [box_x, right] and y in [box_y, bottom]
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jump_lt_int fail click_x box_x;
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jump_gt_int fail click_x right_edge;
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jump_lt_int fail click_y box_y;
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jump_gt_int fail click_y bottom_edge;
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store_absolute_8 check_color -> SELECTED_COLOR;
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else fail
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return;
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}
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function draw_outlined_swatch(nat base, byte color, int x, int y, int width) {
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// Constants
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nat background_color;
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load_absolute_8 GRAY -> background_color;
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byte selected_color;
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load_absolute_8 SELECTED_COLOR -> selected_color;
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jump_eq_int set_selected color selected_color;
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jump end_set_selected;
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do set_selected
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load_absolute_8 DARK_GRAY -> background_color;
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else end_set_selected
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nat outline_size;
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load_immediate 20 -> outline_size;
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nat fill_size;
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load_immediate 17 -> fill_size;
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nat offset;
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load_immediate 2 -> offset;
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call draw_box (base width background_color x y outline_size outline_size);
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int x_off;
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int y_off;
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add_int x offset -> x_off; // x + 2
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add_int y offset -> y_off; // y + 2
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call draw_box (base width color x_off y_off fill_size fill_size);
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return;
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}
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function draw_box (nat db_base, nat screen_width,
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byte box_color, nat x_start, nat y_start,
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nat db_width, nat height) {
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// Compute start address: base + y*640 + x
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nat fat_ptr_size;
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load_immediate 4 -> fat_ptr_size;
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nat offset;
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mul_nat y_start screen_width -> offset;
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add_nat offset x_start -> offset;
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add_nat offset db_base -> offset;
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add_nat offset fat_ptr_size -> offset; // need to add offset for fat pointer size
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int i;
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load_immediate 1 -> i;
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int zero;
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load_immediate 0 -> zero;
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loop draw_box_outer {
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memset_8 box_color db_width -> offset; // draw row
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add_int offset screen_width -> offset; // next row += 640
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sub_int height i -> height; // decrement row count
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jump_gt_int draw_box_outer height zero;
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}
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return;
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} |