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-rw-r--r--plugingui/knob.cc223
1 files changed, 119 insertions, 104 deletions
diff --git a/plugingui/knob.cc b/plugingui/knob.cc
index f907004..765d401 100644
--- a/plugingui/knob.cc
+++ b/plugingui/knob.cc
@@ -40,149 +40,164 @@
namespace GUI {
Knob::Knob(Widget *parent)
- : Widget(parent)
- , img_knob(":knob.png")
+ : Widget(parent)
+ , img_knob(":knob.png")
{
- state = up;
+ state = up;
- maximum = 1.0;
- minimum = 0.0;
+ maximum = 1.0;
+ minimum = 0.0;
- currentValue = minimum;
+ currentValue = minimum;
- mouse_offset_x = 0;
+ mouse_offset_x = 0;
}
void Knob::setValue(float value)
{
- internalSetValue(value);
+ internalSetValue(value);
}
float Knob::value()
{
- return currentValue;
+ return currentValue;
}
void Knob::scrollEvent(ScrollEvent *e)
{
- float value = currentValue - (e->delta / 200.0);
- internalSetValue(value);
+ float value = currentValue - (e->delta / 200.0);
+ internalSetValue(value);
}
void Knob::mouseMoveEvent(MouseMoveEvent *e)
{
- if(state == down) {
- if(mouse_offset_x == (e->x + -1 * e->y)) {
- return;
- }
+ if(state == down)
+ {
+ if(mouse_offset_x == (e->x + -1 * e->y))
+ {
+ return;
+ }
- float dval = mouse_offset_x - (e->x + -1 * e->y);
- float value = currentValue - (dval / 300.0);
+ float dval = mouse_offset_x - (e->x + -1 * e->y);
+ float value = currentValue - (dval / 300.0);
- internalSetValue(value);
+ internalSetValue(value);
- mouse_offset_x = e->x + -1 * e->y;
- }
+ mouse_offset_x = e->x + -1 * e->y;
+ }
}
void Knob::keyEvent(KeyEvent *e)
{
- if(e->direction != -1) {
- return;
- }
-
- float value = currentValue;
- switch(e->keycode) {
- case KeyEvent::KEY_UP:
- value += 0.01;
- break;
- case KeyEvent::KEY_DOWN:
- value -= 0.01;
- break;
- case KeyEvent::KEY_RIGHT:
- value += 0.01;
- break;
- case KeyEvent::KEY_LEFT:
- value -= 0.01;
- break;
- case KeyEvent::KEY_HOME:
- value = 0;
- break;
- case KeyEvent::KEY_END:
- value = 1;
- break;
- default:
- break;
- }
-
- internalSetValue(value);
+ if(e->direction != -1)
+ {
+ return;
+ }
+
+ float value = currentValue;
+ switch(e->keycode) {
+ case KeyEvent::KEY_UP:
+ value += 0.01;
+ break;
+ case KeyEvent::KEY_DOWN:
+ value -= 0.01;
+ break;
+ case KeyEvent::KEY_RIGHT:
+ value += 0.01;
+ break;
+ case KeyEvent::KEY_LEFT:
+ value -= 0.01;
+ break;
+ case KeyEvent::KEY_HOME:
+ value = 0;
+ break;
+ case KeyEvent::KEY_END:
+ value = 1;
+ break;
+ default:
+ break;
+ }
+
+ internalSetValue(value);
}
void Knob::buttonEvent(ButtonEvent *e)
{
- if(e->direction == 1) {
- state = down;
- mouse_offset_x = e->x + -1*e->y;
- }
- if(e->direction == -1) {
- state = up;
- mouse_offset_x = e->x + -1*e->y;
- clicked();
- }
+ if(e->direction == 1)
+ {
+ state = down;
+ mouse_offset_x = e->x + -1*e->y;
+ }
+
+ if(e->direction == -1)
+ {
+ state = up;
+ mouse_offset_x = e->x + -1*e->y;
+ clicked();
+ }
}
void Knob::repaintEvent(RepaintEvent *e)
{
- int diameter = (width()>height()?height():width());
- int radius = diameter / 2;
- int center_x = width() / 2;
- int center_y = height() / 2;
-
- Painter p(this);
-
- p.clear();
- p.drawImageStretched(0, 0, &img_knob, diameter, diameter);
-
- char buf[64];
- sprintf(buf, "%.2f", currentValue * maximum);
- Font font;
- p.drawText(center_x - font.textWidth(buf) / 2 + 1,
- center_y + font.textHeight(buf) / 2 + 1, font, buf);
-
- // Make it start from 20% and stop at 80%
- double padval = currentValue * 0.8 + 0.1;
-
- double from_x = sin((-1 * padval + 1) * 2 * M_PI) * radius * 0.6;
- double from_y = cos((-1 * padval + 1) * 2 * M_PI) * radius * 0.6;
-
- double to_x = sin((-1 * padval + 1) * 2 * M_PI) * radius * 0.8;
- double to_y = cos((-1 * padval + 1) * 2 * M_PI) * radius * 0.8;
-
- // Draw "fat" line by drawing 9 lines with moved start/ending points.
- p.setColour(Colour(1, 0, 0, 1));
- for(int _x = -1; _x < 2; _x++) {
- for(int _y = -1; _y < 2; _y++) {
- p.drawLine(from_x + center_x + _x,
- from_y + center_y + _y,
- to_x + center_x + _x,
- to_y + center_y + _y);
-
- }
- }
+ int diameter = (width()>height()?height():width());
+ int radius = diameter / 2;
+ int center_x = width() / 2;
+ int center_y = height() / 2;
+
+ Painter p(this);
+
+ p.clear();
+ p.drawImageStretched(0, 0, &img_knob, diameter, diameter);
+
+ char buf[64];
+ sprintf(buf, "%.2f", currentValue * maximum);
+ Font font;
+ p.drawText(center_x - font.textWidth(buf) / 2 + 1,
+ center_y + font.textHeight(buf) / 2 + 1, font, buf);
+
+ // Make it start from 20% and stop at 80%
+ double padval = currentValue * 0.8 + 0.1;
+
+ double from_x = sin((-1 * padval + 1) * 2 * M_PI) * radius * 0.6;
+ double from_y = cos((-1 * padval + 1) * 2 * M_PI) * radius * 0.6;
+
+ double to_x = sin((-1 * padval + 1) * 2 * M_PI) * radius * 0.8;
+ double to_y = cos((-1 * padval + 1) * 2 * M_PI) * radius * 0.8;
+
+ // Draw "fat" line by drawing 9 lines with moved start/ending points.
+ p.setColour(Colour(1, 0, 0, 1));
+ for(int _x = -1; _x < 2; _x++)
+ {
+ for(int _y = -1; _y < 2; _y++)
+ {
+ p.drawLine(from_x + center_x + _x,
+ from_y + center_y + _y,
+ to_x + center_x + _x,
+ to_y + center_y + _y);
+ }
+ }
}
void Knob::internalSetValue(float value)
{
- if(value < minimum) value = minimum;
- if(value > maximum) value = maximum;
-
- if(value == currentValue) {
- return;
- }
-
- currentValue = value;
- valueChangedNotifier(currentValue);
- repaintEvent(NULL);
+ if(value < minimum)
+ {
+ value = minimum;
+ }
+
+ if(value > maximum)
+ {
+ value = maximum;
+ }
+
+ if(value == currentValue)
+ {
+ return;
+ }
+
+ currentValue = value;
+ valueChangedNotifier(currentValue);
+ repaintEvent(nullptr);
}
} // GUI::
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 21:16:06 +0000