Diff: Slider.cpp

Revision:

0:89d154d0806c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Slider.cpp	Fri Apr 07 11:40:27 2017 +0000
@@ -0,0 +1,78 @@
+#include "Slider.h"
+#include <stdio.h>
+
+/* Constructor: define dimensions, positions and colors */
+Slider::Slider(uint16_t x, uint16_t y,  uint16_t w, uint16_t h, uint32_t c1, uint32_t c2)
+{
+    if(x<(maxWidth-w)) xpos=x;
+    else xpos=maxWidth-w;
+    if(y<(maxHeight-h)) ypos=y;
+    else ypos=maxHeight-h;
+    if(w<(maxWidth)) width=w;
+    else width=maxWidth;
+    if(h<(maxHeight)) height=h;
+    else height=maxHeight;
+    color1=c1;
+    color2=c2;
+    value=128;
+}
+
+/* Draw the slider */
+void Slider::Show()
+{
+    char text[10];
+    uint32_t OldTextColor;
+    uint32_t OldBackColor;
+    sFONT *font;
+
+    // Save previous colors and font
+    OldTextColor=BSP_LCD_GetTextColor();
+    OldBackColor=BSP_LCD_GetBackColor();
+    font = BSP_LCD_GetFont();
+
+    // Draw Slider
+    BSP_LCD_SetTextColor(color2);
+    BSP_LCD_FillRect(xpos,ypos,width,(height*(255-value))/255);
+    BSP_LCD_SetTextColor(color1);
+    BSP_LCD_DrawRect(xpos,ypos,width,(height*(255-value))/255);
+    BSP_LCD_FillRect(xpos,ypos+(height*(255-value))/255,width,(height*value)/255);
+
+    //Draw text value
+    BSP_LCD_SetFont(&Font16);
+    BSP_LCD_SetBackColor(color2);
+    sprintf(text,"%3d",value);
+    BSP_LCD_DisplayStringAt(xpos,ypos+height,(uint8_t*)text,LEFT_MODE);
+    
+    //Restore colors and fonts
+    BSP_LCD_SetTextColor(OldTextColor);
+    BSP_LCD_SetBackColor(OldBackColor);
+    BSP_LCD_SetFont(font);
+}
+
+/* Move the slider if TouchScreen is in area*/
+void Slider::Move(uint16_t x, uint16_t y)
+{
+    if ((x>=xpos) && (x<=xpos+width) && (y>=ypos) && (y<=ypos+height)) { //(y>=ypos+value*height/100-10) && (y<=ypos+value*height/100+10))
+        value=255-(y-ypos)*255/height;
+        Show();
+    }
+}
+
+/* read the slider value */
+uint16_t Slider::GetValue()
+{
+    return value;
+}
+
+/* write the slider value */
+void Slider::SetValue(uint16_t v)
+{
+    if (v<=255) value=v;
+    else value=255;
+    Show();
+}
+
+/* Destructor */
+Slider::~Slider()
+{
+}