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-rw-r--r--plugingui/knob.cc131
1 files changed, 57 insertions, 74 deletions
diff --git a/plugingui/knob.cc b/plugingui/knob.cc
index 4cac180..b843106 100644
--- a/plugingui/knob.cc
+++ b/plugingui/knob.cc
@@ -37,118 +37,101 @@
#endif
#include <math.h>
-GUI::Knob::Knob(Widget *parent)
- : GUI::Widget(parent), img_knob(":knob.png")
+namespace GUI {
+
+Knob::Knob(Widget *parent)
+ : Widget(parent)
+ , img_knob(":knob.png")
{
state = up;
- val = 0.0;
maximum = 1.0;
minimum = 0.0;
- mouse_offset_x = 0;
- handler = NULL;
- ptr = NULL;
-}
+ currentValue = minimum;
-void GUI::Knob::setValue(float v)
-{
- val = v;
- if(handler) handler(ptr);
- repaintEvent(NULL);
+ mouse_offset_x = 0;
}
-float GUI::Knob::value()
+void Knob::setValue(float value)
{
- return val;
+ internalSetValue(value);
}
-void GUI::Knob::registerClickHandler(void (*handler)(void *), void *ptr)
+float Knob::value()
{
- this->handler = handler;
- this->ptr = ptr;
+ return currentValue;
}
-void GUI::Knob::scrollEvent(ScrollEvent *e)
+void Knob::scrollEvent(ScrollEvent *e)
{
- val -= e->delta / 200.0;
- if(val < 0) val = 0;
- if(val > 1) val = 1;
-
- if(handler) handler(ptr);
-
- repaintEvent(NULL);
+ float value = currentValue - (e->delta / 200.0);
+ internalSetValue(value);
}
-void GUI::Knob::mouseMoveEvent(MouseMoveEvent *e)
+void Knob::mouseMoveEvent(MouseMoveEvent *e)
{
if(state == down) {
- if(mouse_offset_x == (e->x + -1*e->y)) return;
-
- float dval = mouse_offset_x - (e->x + -1*e->y);
- val -= dval / 300.0;
+ if(mouse_offset_x == (e->x + -1 * e->y)) {
+ return;
+ }
- if(val < 0) val = 0;
- if(val > 1) val = 1;
+ float dval = mouse_offset_x - (e->x + -1 * e->y);
+ float value = currentValue - (dval / 300.0);
- if(handler) handler(ptr);
- repaintEvent(NULL);
+ internalSetValue(value);
- mouse_offset_x = e->x + -1*e->y;
+ mouse_offset_x = e->x + -1 * e->y;
}
}
-void GUI::Knob::keyEvent(KeyEvent *e)
+void Knob::keyEvent(KeyEvent *e)
{
- if(e->direction != -1) return;
+ if(e->direction != -1) {
+ return;
+ }
+ float value = currentValue;
switch(e->keycode) {
- case GUI::KeyEvent::KEY_UP:
- val += 0.01;
+ case KeyEvent::KEY_UP:
+ value += 0.01;
break;
- case GUI::KeyEvent::KEY_DOWN:
- val -= 0.01;
+ case KeyEvent::KEY_DOWN:
+ value -= 0.01;
break;
- case GUI::KeyEvent::KEY_RIGHT:
- val += 0.01;
+ case KeyEvent::KEY_RIGHT:
+ value += 0.01;
break;
- case GUI::KeyEvent::KEY_LEFT:
- val -= 0.01;
+ case KeyEvent::KEY_LEFT:
+ value -= 0.01;
break;
- case GUI::KeyEvent::KEY_HOME:
- val = 0;
+ case KeyEvent::KEY_HOME:
+ value = 0;
break;
- case GUI::KeyEvent::KEY_END:
- val = 1;
+ case KeyEvent::KEY_END:
+ value = 1;
break;
default:
break;
}
- if(val < 0) val = 0;
- if(val > 1) val = 1;
-
- repaintEvent(NULL);
+ internalSetValue(value);
}
-void GUI::Knob::buttonEvent(ButtonEvent *e)
+void Knob::buttonEvent(ButtonEvent *e)
{
if(e->direction == 1) {
state = down;
mouse_offset_x = e->x + -1*e->y;
- if(handler) handler(ptr);
- repaintEvent(NULL);
}
if(e->direction == -1) {
state = up;
mouse_offset_x = e->x + -1*e->y;
- repaintEvent(NULL);
clicked();
- if(handler) handler(ptr);
}
}
-void GUI::Knob::repaintEvent(GUI::RepaintEvent *e)
+void Knob::repaintEvent(RepaintEvent *e)
{
int diameter = (width()>height()?height():width());
int radius = diameter / 2;
@@ -161,12 +144,13 @@ void GUI::Knob::repaintEvent(GUI::RepaintEvent *e)
p.drawImageStretched(0, 0, &img_knob, diameter, diameter);
char buf[64];
- sprintf(buf, "%.2f", val * maximum);
+ 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);
- double padval = val * 0.8 + 0.1; // Make it start from 20% and stop at 80%
+ // 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;
@@ -187,19 +171,18 @@ void GUI::Knob::repaintEvent(GUI::RepaintEvent *e)
}
}
-#ifdef TEST_KNOB
-//Additional dependency files
-//deps:
-//Required cflags (autoconf vars may be used)
-//cflags:
-//Required link options (autoconf vars may be used)
-//libs:
-#include "test.h"
-
-TEST_BEGIN;
+void Knob::internalSetValue(float value)
+{
+ if(value < minimum) value = minimum;
+ if(value > maximum) value = maximum;
-// TODO: Put some testcode here (see test.h for usable macros).
+ if(value == currentValue) {
+ return;
+ }
-TEST_END;
+ currentValue = value;
+ valueChangedNotifier.notify(currentValue);
+ repaintEvent(NULL);
+}
-#endif/*TEST_KNOB*/
+} // GUI::