MouseEvent

Listen for this on your event listeners if you are interested in mouse action.

Note that button is used on mouse press and release events. If you are curious about which button is being held in during motion, use modifierState and check the bitmask for ModifierState.leftButtonDown, etc.

struct MouseEvent {

MouseEventType type;

int x;

int y;

int dx;

int dy;

MouseButton button;

int modifierState;

ubyte buttonLinear [@property getter];

bool doubleClick;

SimpleWindow window;

static bool equStr(MouseEvent event, const(char)[] str);

}

Members

Properties

buttonLinear ubyte buttonLinear [@property getter]: Returns a linear representation of mouse button, for use with static arrays. Guaranteed to be >= 0 && <= 15

Static functions

equStr bool equStr(MouseEvent event, const(char)[] str): can contain emacs-like modifier prefix case-insensitive names: lmbX/leftX rmbX/rightX mmbX/middleX wheelX motion (no prefix allowed) 'X' is either "up" or "down" (or "-up"/"-down"); if omited, means "down"

Variables

button MouseButton button;: See MouseButton
doubleClick bool doubleClick;: was it a double click? Only set on type == MouseEventType.buttonPressed
dx int dx;: Change in X position since last report
dy int dy;: Change in Y position since last report
modifierState int modifierState;: See ModifierState
type MouseEventType type;: movement, press, release, double click. See MouseEventType
window SimpleWindow window;: The window in which the event happened.
x int x;: Current X position of the cursor when the event fired, relative to the upper-left corner of the window, reported in pixels. (0, 0) is the upper left, (window.width - 1, window.height - 1) is the lower right corner of the window.
y int y;: Current Y position of the cursor when the event fired.

Examples

This will draw boxes on the window with the mouse as you hold the left button.

import arsd.simpledisplay;

void main() {
	auto window = new SimpleWindow();

	window.eventLoop(0,
		(MouseEvent ev) {
			if(ev.modifierState & ModifierState.leftButtonDown) {
				auto painter = window.draw();
				painter.fillColor = Color.red;
				painter.outlineColor = Color.black;
				painter.drawRectangle(Point(ev.x / 16 * 16, ev.y / 16 * 16), 16, 16);
			}
		}
	);
}