kolibrios/programs/cmm/iconedit/tools/simple_figure.h

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// Line tool
struct SimpleFigureTool_State {
int startX, startY;
int lastTempPosX, lastTempPosY;
};
enum {
TOOL_LINE_STATE,
TOOL_RECT_STATE
};
SimpleFigureTool_State figTool;
void SimpleFigureTool_Reset() {
figTool.startX = -1;
figTool.startY = -1;
figTool.lastTempPosX = -1;
figTool.lastTempPosY = -1;
}
int mouseX_last;
int mouseY_last;
bool first_click_in_canvas = false;
void SimpleFigureTool_onMouseEvent(int mouseX, int mouseY, int lkm, int pkm) {
int x1, y1, x2, y2;
if (mouse.down) && (canvas.hovered()) first_click_in_canvas = true;
if (first_click_in_canvas)
{
if (mouseX>canvas.x+canvas.w-zoom.value) mouseX = canvas.x+canvas.w-zoom.value;
if (mouseY>canvas.y+canvas.h-zoom.value) mouseY = canvas.y+canvas.h-zoom.value;
if (mouseX<canvas.x) mouseX = canvas.x;
if (mouseY<canvas.y) mouseY = canvas.y;
if (mouse.key) {
if ((figTool.startX < 0)
|| (figTool.startY < 0)) {
figTool.startX = mouseX;
figTool.startY = mouseY;
}
else {
if ((calc(mouseX - canvas.x/zoom.value) != figTool.lastTempPosX)
|| (calc(mouseY - canvas.y/zoom.value) != figTool.lastTempPosY))
{
DrawCanvas();
}
}
mouseX_last = mouseX;
mouseY_last = mouseY;
}
if (mouse.up) {
if ((figTool.startX >= 0)
&& (figTool.startY >= 0)) {
x1 = TO_CANVAS_X(figTool.startX);
y1 = TO_CANVAS_Y(figTool.startY);
x2 = TO_CANVAS_X(mouseX);
y2 = TO_CANVAS_Y(mouseY);
// Draw line from start position to current position
if (currentTool == TOOL_LINE) {
DrawLineIcon(x1, y1, x2, y2, tool_color, TOIMAGE);
}
else if (currentTool == TOOL_RECT) {
DrawRectangleIcon(x1, y1, x2, y2, tool_color, TOIMAGE);
}
else if (currentTool == TOOL_BAR) {
DrawBarIcon(x1, y1, x2, y2, tool_color, TOIMAGE);
}
DrawCanvas();
actionsHistory.saveCurrentState();
// Reset start position
figTool.startX = -1;
figTool.startY = -1;
first_click_in_canvas = false;
}
}
}
}
void SimpleFigureTool_onCanvasDraw() {
int x1, y1, x2, y2;
if ((figTool.startX >= 0)
&& (figTool.startY >= 0) && (mouse.key)) {
x1 = TO_CANVAS_X(figTool.startX);
y1 = TO_CANVAS_Y(figTool.startY);
x2 = TO_CANVAS_X(mouseX_last);
y2 = TO_CANVAS_Y(mouseY_last);
if (currentTool == TOOL_LINE)
DrawLineIcon(x1, y1, x2, y2, tool_color, TOCANVAS);
else if (currentTool == TOOL_RECT)
DrawRectangleIcon(x1, y1, x2, y2, tool_color, TOCANVAS);
else if (currentTool == TOOL_BAR)
DrawBarIcon(x1, y1, x2, y2, tool_color, TOCANVAS);
figTool.lastTempPosX = mouseX_last - canvas.x/zoom.value;
figTool.lastTempPosY = mouseY_last - canvas.y/zoom.value;
}
}
//===================================================//
// //
// DRAWs //
// //
//===================================================//
// target - TOMAGE, TOCANVAS
void DrawLineIcon(int x1, int y1, int x2, int y2, dword color, int target) {
int dx, dy, signX, signY, error, error2;
if (TOIMAGE == target) {
image.draw_line(x1, y1, x2, y2, color);
return;
}
dx = x2 - x1;
if (dx < 0)
dx = -dx;
dy = y2 - y1;
if (dy < 0)
dy = -dy;
if (x1 < x2)
signX = 1;
else
signX = -1;
if (y1 < y2)
signY = 1;
else
signY = -1;
error = dx - dy;
DrawCanvasPixel(y2, x2, color);
image.pixel_state.set_drawable_state(y2, x2, false);
while((x1 != x2) || (y1 != y2))
{
DrawCanvasPixel(y1, x1, color);
image.pixel_state.set_drawable_state(y1, x1, false);
error2 = error * 2;
if(error2 > calc(-dy))
{
error -= dy;
x1 += signX;
}
if(error2 < dx)
{
error += dx;
y1 += signY;
}
}
}
void DrawRectangleIcon(int x1, int y1, int x2, int y2, dword color, int target) {
DrawLineIcon(x1, y1, x2, y1, color, target);
DrawLineIcon(x2, y1, x2, y2, color, target);
DrawLineIcon(x2, y2, x1, y2, color, target);
DrawLineIcon(x1, y2, x1, y1, color, target);
}
void DrawBarIcon(int x1, int y1, int x2, int y2, dword color, int target) {
signed signY;
if (y1 < y2)
signY = 1;
else
signY = -1;
while (y1 != y2+signY) {
DrawLineIcon(x1, y1, x2, y1, color, target);
y1 += signY;
}
}