forked from KolibriOS/kolibrios
264 lines
6.5 KiB
C
264 lines
6.5 KiB
C
//===================================================//
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// //
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// DATA //
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// //
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//===================================================//
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_image selection;
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enum {
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STATE_INACTIVE=0,
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STATE_CHOSING=1,
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STATE_SELECTED=2
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};
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int selection_state = STATE_INACTIVE;
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int selection_start_x = -1;
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int selection_start_y = -1;
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int selection_end_x = -1;
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int selection_end_y = -1;
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int selection_pivot_x = -1;
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int selection_pivot_y = -1;
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//===================================================//
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// //
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// CODE //
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// //
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//===================================================//
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void SelectTool_normalizeSelection() {
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// Restructuring of the selection coordinates
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if (selection_end_x < selection_start_x) {
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selection_start_x >< selection_end_x;
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}
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if (selection_end_y < selection_start_y) {
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selection_end_y >< selection_start_y;
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}
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}
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void SelectTool_drawBufferToImage(int insert_x, int insert_y) {
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dword r, c;
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dword insert_to_x, insert_to_y;
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insert_to_x = math.min(insert_x + selection.columns - 1, image.columns-1);
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insert_to_y = math.min(insert_y + selection.rows - 1, image.rows-1);
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for (r = insert_y; r <= insert_to_y; r++) {
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for (c = insert_x; c <= insert_to_x; c++) {
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image.set_pixel(r, c, selection.get_pixel(r - insert_y, c - insert_x) );
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}
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}
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}
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void ApplySelectionToImage() {
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if (STATE_SELECTED != selection_state) return;
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SelectTool_drawBufferToImage(selection_start_x, selection_start_y);
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selection_pivot_x = -1;
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selection_pivot_y = -1;
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actionsHistory.saveCurrentState();
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DrawCanvas();
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}
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bool is_selection_moving() {
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if (STATE_SELECTED == selection_state) return true;
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return false;
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}
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void reset_selection() {
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ApplySelectionToImage();
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selection_start_x = -1;
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selection_start_y = -1;
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selection_end_x = -1;
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selection_end_y = -1;
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}
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void SelectTool_activate() {
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reset_selection();
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selection_state = STATE_INACTIVE;
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}
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void SelectTool_deactivate() {
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ApplySelectionToImage();
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selection_state = STATE_INACTIVE;
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}
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bool SelectTool_pointInSelection(int x, int y) {
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if (x >= selection_start_x) && (x <= selection_end_x) && (y >= selection_start_y) && (y <= selection_end_y)
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return true;
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else
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return false;
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}
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void SelectTool_copyToBuffer() {
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dword r, c;
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selection_state = STATE_SELECTED;
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selection.rows = selection_end_y - selection_start_y + 1;
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selection.columns = selection_end_x - selection_start_x + 1;
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for (r = selection_start_y; r <= selection_end_y; r++) {
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for (c = selection_start_x; c <= selection_end_x; c++) {
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selection.set_pixel(r - selection_start_y, c - selection_start_x, image.get_pixel(r, c) );
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}
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}
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}
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void SelectTool_onMouseEvent(int mouseX, int mouseY, int lkm, int pkm) {
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int dx, dy, m_x, m_y;
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m_x = TO_CANVAS_X(mouseX);
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m_y = TO_CANVAS_Y(mouseY);
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if (mouse.down) && (canvas.hovered())
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{
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if (selection_start_x != -1) && (SelectTool_pointInSelection(m_x, m_y)) {
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if (selection_pivot_x == -1) {
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selection_pivot_x = m_x;
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selection_pivot_y = m_y;
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GetKeys();
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if ( (key_modifier&KEY_LSHIFT) || (key_modifier&KEY_RSHIFT) ) {
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DrawBarIcon(selection_start_x, selection_start_y, selection_end_x,
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selection_end_y, color2, TOIMAGE);
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}
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selection_state = STATE_SELECTED;
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}
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}
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else {
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reset_selection();
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selection_state = STATE_CHOSING;
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}
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}
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if (selection_pivot_x != -1) {
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dx = m_x - selection_pivot_x;
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dy = m_y - selection_pivot_y;
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if (selection_start_x + dx < 0)
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dx = selection_start_x;
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if (selection_end_x + dx >= image.columns)
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dx = image.columns-1 - selection_end_x;
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if (selection_start_y + dy < 0)
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dy = selection_start_y;
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if (selection_end_y + dy >= image.rows)
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dy = image.rows-1 - selection_end_y;
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selection_start_x += dx;
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selection_end_x += dx;
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selection_start_y += dy;
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selection_end_y += dy;
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selection_pivot_x += dx;
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selection_pivot_y += dy;
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DrawCanvas();
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}
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if (STATE_CHOSING == selection_state)
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{
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mouseX = math.in(mouseX, canvas.x, canvas.x+canvas.w-zoom.value);
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mouseY = math.in(mouseY, canvas.y, canvas.y+canvas.h-zoom.value);
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if (mouse.key) {
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selection_end_x = TO_CANVAS_X(mouseX);
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selection_end_y = TO_CANVAS_Y(mouseY);
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if ((selection_start_x < 0) || (selection_start_y < 0)) {
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selection_start_x = TO_CANVAS_X(mouseX);
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selection_start_y = TO_CANVAS_Y(mouseY);
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}
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else {
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DrawCanvas();
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}
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}
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if (mouse.up) {
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SelectTool_normalizeSelection();
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SelectTool_copyToBuffer();
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}
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}
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if (mouse.up) {
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if (selection_pivot_x != -1) {
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selection_pivot_x = -1;
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selection_pivot_y = -1;
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}
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}
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}
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void SelectTool_onKeyEvent(dword keycode) {
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dword r, c;
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if (SCAN_CODE_DEL == keycode) {
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selection_start_x = -1;
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selection_start_y = -1;
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selection_end_x = -1;
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selection_end_y = -1;
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selection_state = STATE_INACTIVE;
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DrawCanvas();
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}
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if (SCAN_CODE_ESC == keycode) {
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reset_selection();
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DrawCanvas();
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}
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if (SCAN_CODE_KEY_V == keycode) {
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if (STATE_SELECTED == selection_state) {
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selection_start_x = 0;
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selection_start_y = 0;
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selection_end_x = selection.columns - 1;
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selection_end_y = selection.rows - 1;
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DrawCanvas();
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}
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}
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}
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void SelectTool_onCanvasDraw()
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{
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#define SELECTION_COLOR 0xAAE5EF
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int p1x, p1y, p2x, p2y, r, c, old_color, new_color;
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if ((selection_start_x >= 0) && (selection_start_y >= 0) && (selection_end_x >= 0) && (selection_end_y >= 0)) {
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p1x = math.min(selection_start_x, selection_end_x);
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p2x = math.max(selection_start_x, selection_end_x);
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p1y = math.min(selection_start_y, selection_end_y);
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p2y = math.max(selection_start_y, selection_end_y);
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for (r = p1y; r <= p2y; r++) {
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for (c = p1x; c <= p2x; c++) {
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image.pixel_state.set_drawable_state(r, c, false);
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if (STATE_SELECTED == selection_state) && (SelectTool_pointInSelection(c, r)) {
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old_color = selection.get_pixel(r - selection_start_y, c - selection_start_x);
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}
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else {
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old_color = image.get_pixel(r, c);
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}
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new_color = MixColors(old_color, SELECTION_COLOR, 64);
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DrawCanvasPixel(r, c, new_color);
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}
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}
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}
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}
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