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-rw-r--r--plugingui/knob.cc268
1 files changed, 133 insertions, 135 deletions
diff --git a/plugingui/knob.cc b/plugingui/knob.cc
index 4cac180..ab2eca9 100644
--- a/plugingui/knob.cc
+++ b/plugingui/knob.cc
@@ -37,169 +37,167 @@
#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;
+ state = up;
- val = 0.0;
- maximum = 1.0;
- minimum = 0.0;
- mouse_offset_x = 0;
+ maximum = 1.0;
+ minimum = 0.0;
- 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* scrollEvent)
{
- val -= e->delta / 200.0;
- if(val < 0) val = 0;
- if(val > 1) val = 1;
-
- if(handler) handler(ptr);
-
- repaintEvent(NULL);
+ float value = currentValue - (scrollEvent->delta / 200.0);
+ internalSetValue(value);
}
-void GUI::Knob::mouseMoveEvent(MouseMoveEvent *e)
+void Knob::mouseMoveEvent(MouseMoveEvent* mouseMoveEvent)
{
- if(state == down) {
- if(mouse_offset_x == (e->x + -1*e->y)) return;
+ if(state == down)
+ {
+ if(mouse_offset_x == (mouseMoveEvent->x + (-1 * mouseMoveEvent->y)))
+ {
+ return;
+ }
- float dval = mouse_offset_x - (e->x + -1*e->y);
- val -= dval / 300.0;
+ float dval =
+ mouse_offset_x - (mouseMoveEvent->x + (-1 * mouseMoveEvent->y));
+ float value = currentValue - (dval / 300.0);
- if(val < 0) val = 0;
- if(val > 1) val = 1;
+ internalSetValue(value);
- if(handler) handler(ptr);
- repaintEvent(NULL);
-
- mouse_offset_x = e->x + -1*e->y;
- }
+ mouse_offset_x = mouseMoveEvent->x + (-1 * mouseMoveEvent->y);
+ }
}
-void GUI::Knob::keyEvent(KeyEvent *e)
+void Knob::keyEvent(KeyEvent* keyEvent)
{
- if(e->direction != -1) return;
-
- switch(e->keycode) {
- case GUI::KeyEvent::KEY_UP:
- val += 0.01;
- break;
- case GUI::KeyEvent::KEY_DOWN:
- val -= 0.01;
- break;
- case GUI::KeyEvent::KEY_RIGHT:
- val += 0.01;
- break;
- case GUI::KeyEvent::KEY_LEFT:
- val -= 0.01;
- break;
- case GUI::KeyEvent::KEY_HOME:
- val = 0;
- break;
- case GUI::KeyEvent::KEY_END:
- val = 1;
- break;
- default:
- break;
- }
-
- if(val < 0) val = 0;
- if(val > 1) val = 1;
-
- repaintEvent(NULL);
+ if(keyEvent->direction != Direction::up)
+ {
+ return;
+ }
+
+ float value = currentValue;
+ switch(keyEvent->keycode) {
+ case Key::up:
+ value += 0.01;
+ break;
+ case Key::down:
+ value -= 0.01;
+ break;
+ case Key::right:
+ value += 0.01;
+ break;
+ case Key::left:
+ value -= 0.01;
+ break;
+ case Key::home:
+ value = 0;
+ break;
+ case Key::end:
+ value = 1;
+ break;
+ default:
+ break;
+ }
+
+ internalSetValue(value);
}
-void GUI::Knob::buttonEvent(ButtonEvent *e)
+void Knob::buttonEvent(ButtonEvent* buttonEvent)
{
- 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);
- }
+ if(buttonEvent->direction == Direction::down)
+ {
+ state = down;
+ mouse_offset_x = buttonEvent->x + (-1 * buttonEvent->y);
+ }
+
+ if(buttonEvent->direction == Direction::up)
+ {
+ state = up;
+ mouse_offset_x = buttonEvent->x + (-1 * buttonEvent->y);
+ clicked();
+ }
}
-void GUI::Knob::repaintEvent(GUI::RepaintEvent *e)
+void Knob::repaintEvent(RepaintEvent* repaintEvent)
{
- 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", val * 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%
-
- 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);
+ 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);
+ }
+ }
}
-#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;
-
-// TODO: Put some testcode here (see test.h for usable macros).
-
-TEST_END;
+void Knob::internalSetValue(float value)
+{
+ if(value < minimum)
+ {
+ value = minimum;
+ }
+
+ if(value > maximum)
+ {
+ value = maximum;
+ }
+
+ if(value == currentValue)
+ {
+ return;
+ }
+
+ currentValue = value;
+ valueChangedNotifier(currentValue);
+ repaintEvent(nullptr);
+}
-#endif/*TEST_KNOB*/
+} // GUI::
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