forked from KolibriOS/kolibrios
103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
struct SELECTION {
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dword start_x, start_y, start_offset;
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dword end_x, end_y, end_offset;
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dword color;
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bool is_active();
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void set_start();
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void set_end();
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void draw();
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void draw_line();
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void cancel();
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bool swap_start_end();
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void normalize();
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void select_all();
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void debug();
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} selection;
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bool SELECTION::is_active()
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{
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if (start_offset) && (end_offset) && (start_offset != end_offset) {
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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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}
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void SELECTION::draw_line(dword x,y,w)
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{
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canvas.DrawBar(x, y - list.first * list.item_h, w, list.item_h, color);
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}
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void SELECTION::draw(int i)
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{
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if (is_active()) {
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if (start_y == i) && (end_y == i) draw_line(start_x * list.font_w+2, start_y, end_x - start_x * list.font_w);
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else if (start_y == i) draw_line(start_x * list.font_w+2, start_y, list.w -2- calc(start_x * list.font_w));
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else if (end_y == i) draw_line(0, end_y, end_x * list.font_w+2);
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//only for debug:
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//canvas.DrawBar(start_x * list.font_w + 2, start_y * list.item_h, 2, list.item_h, 0x00FF00);
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//canvas.DrawBar(end_x * list.font_w + 0, end_y * list.item_h, 2, list.item_h, 0xFF00FF);
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}
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//DrawCursor
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if (list.cur_y >= list.first) && (list.cur_y <= list.first+list.visible) {
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canvas.DrawBar(list.cur_x * list.font_w + 2, list.cur_y - list.first * list.item_h, 2, list.item_h, theme.cursor);
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}
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}
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void SELECTION::cancel()
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{
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start_offset = end_offset = lines.get(list.cur_y) + list.cur_x;
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start_x = end_x = list.cur_x;
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start_y = end_y = list.cur_y;
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normalize();
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}
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void SELECTION::set_start()
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{
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if (selection.is_active()) return;
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start_x = list.cur_x;
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start_y = list.cur_y;
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normalize();
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start_offset = lines.get(start_y) + start_x;
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}
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:void SELECTION::debug()
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{
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char rez[256];
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sprintf(#rez, "start_x: %d start_y: %d end_x: %d end_y: %d", start_x, start_y, end_x, end_y);
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debugln(#rez);
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}
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void SELECTION::set_end()
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{
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end_x = list.cur_x;
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end_y = list.cur_y;
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normalize();
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end_offset = lines.get(end_y) + end_x;
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}
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void SELECTION::normalize()
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{
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start_x = math.min(start_x, lines.get(start_y+1) - lines.get(start_y));
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end_x = math.min(end_x, lines.get(end_y+1) - lines.get(end_y));
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}
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void SELECTION::select_all()
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{
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start_y = 0;
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start_x = 0;
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end_y = lines.count-2;
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end_x = lines.get(end_y+1) - lines.get(end_y);
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start_offset = lines.get(start_y) + start_x;
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end_offset = lines.get(end_y) + end_x;
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}
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bool SELECTION::swap_start_end()
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{
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start_offset >< end_offset;
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start_x >< end_x;
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start_y >< end_y;
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return true;
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}
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