Diff: SeekBar.cpp

Revision:

0:a2686ef737c2

Child:

5:9c3ea4d4bc6b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SeekBar.cpp	Thu Mar 31 07:28:42 2016 +0000
@@ -0,0 +1,113 @@
+//-----------------------------------------------------------
+//  SeekBar class
+//
+//  2016/03/29, Copyright (c) 2016 MIKAMI, Naoki
+//-----------------------------------------------------------
+
+#include "SeekBar.hpp"
+
+namespace Mikami
+{
+    // Slide thumb
+    //      If the thumb is not touched, return false
+    bool SeekBar::Slide()
+    {
+        if (!PanelTouched())
+        {
+            if (slided_) Draw(v_);
+            slided_ = false;
+            return false;
+        }
+
+        uint16_t x, y;
+        bool rtn = IsOnThumb(x, y);
+        if (rtn)
+        {
+            v_ = ToValue(Point(x, y));
+            Draw(v_, true);
+            slided_ = true;
+        }
+
+        return rtn;
+    }
+
+    // Draw seekbar
+    void SeekBar::Draw(float value, bool fill)
+    {
+        // Erase previous seekbar
+        lcd_.SetTextColor(BACK_COLOR_);
+        if (ORIENT_ == Holizontal)
+            lcd_.FillRect(X_-SIZE_/2, Y_-SIZE_/2, L_+SIZE_+1, SIZE_+1);
+        else
+            lcd_.FillRect(X_-SIZE_/2, Y_-SIZE_/2, SIZE_+1, L_+SIZE_+1);
+ 
+        Point pt = ToPoint(Saturate(value));    // Position of thumb
+
+        // Draw upper line
+        lcd_.SetTextColor(COLOR_H_);
+        if (ORIENT_ == Holizontal)
+            lcd_.FillRect(pt.x, Y_-W_/4, X_+L_-pt.x, W_/2);
+        else
+            lcd_.FillRect(X_-W_/4, Y_, W_/2, pt.y-Y_);
+
+        // Draw lower line
+        lcd_.SetTextColor(COLOR_L_);
+        if ((ORIENT_ == Holizontal) && ((pt.x-X_) > 0))
+            lcd_.FillRect(X_, Y_-W_/2, pt.x-X_, W_);
+        if ((ORIENT_ == Vertical) && ((Y_+L_-pt.y) > 0))
+            lcd_.FillRect(X_-W_/2, pt.y, W_, Y_+L_-pt.y);
+
+        // Draw thumb
+        lcd_.SetTextColor(CREATED_COLOR_);
+        if (fill)
+            lcd_.FillCircle(pt.x, pt.y, SIZE_/2);
+        else
+            lcd_.DrawCircle(pt.x, pt.y, SIZE_/2);
+    }
+
+    // If touched position is on the button, return true
+    bool SeekBar::IsOnThumb(uint16_t &x, uint16_t &y)
+    {
+        x = state_.touchX[0];
+        y = state_.touchY[0];
+
+        Point pt = ToPoint(v_);
+        if (ORIENT_ == Holizontal)
+        {
+            if ( (pt.x-SIZE_/5 <= x) && (x <= pt.x+SIZE_/5) &&
+                 (pt.y-SIZE_ <= y) && (y <= pt.y+SIZE_) ) return true;
+        }
+        else
+        {
+            if ( (pt.x-SIZE_ <= x) && (x <= pt.x+SIZE_) &&
+                 (pt.y-SIZE_/5 <= y) && (y <= pt.y+SIZE_/5) ) return true;
+        }
+
+        return false;
+    }
+
+    SeekBar::Point SeekBar::ToPoint(float value)
+    {
+        if (ORIENT_ == Holizontal)
+            return Point(X_ + L_*(value - MIN_)/(MAX_ - MIN_), Y_);
+        else
+            return Point(X_, Y_ + L_ - L_*(value - MIN_)/(MAX_ - MIN_));
+    }
+
+    float SeekBar::ToValue(Point pt)
+    {
+        float value;
+        if (ORIENT_ == Holizontal)
+            value = (pt.x - X_)*(MAX_ - MIN_)/(float)L_ + MIN_;
+        else
+            value = -(pt.y - Y_ - L_)*(MAX_ - MIN_)/(float)L_ + MIN_;
+        return Saturate(value);
+    }
+
+    float SeekBar::Saturate(float value)
+    {
+        if (value < MIN_) value = MIN_;
+        if (value > MAX_) value = MAX_;
+        return value;
+    }
+}