Updated fileheaders and styled files using astyle.
This commit is contained in:
t-moe
@@ -1,154 +1,188 @@
|
||||
#include "tft.h"
|
||||
#include "touch.h"
|
||||
#include "button.h"
|
||||
#include <string.h>
|
||||
|
||||
/* The Idea is as follows:
|
||||
* When the user add's a button we create a touch area for that region and wait for PEN_DOWN events.
|
||||
* Once the user puts the pen down in this area we'll redraw the button with different shadows (feedback)
|
||||
* and we'll now wait on PEN_UP or PEN_LEAVE events.
|
||||
* If the user takes the pen away while in the area (PEN_UP), we call the provided user callback
|
||||
* Otherwise (PEN_LEAVE) we only restore the initial shadows
|
||||
*/
|
||||
|
||||
/* Possible improvements:
|
||||
* Move the button by 1 pixel while he is pressed, to create a "full 3d" experience
|
||||
* Add events for the case when the button is pressed for a long time, without release
|
||||
*/
|
||||
|
||||
//Method to calculate the shadow colors used to create the "3d" effect
|
||||
void calculate_shadows(uint16_t bgcolor, uint16_t* light_shadow, uint16_t* dark_shadow) {
|
||||
#define BRIGHTNESS_VAL 3 //How much the Brightness is in/decreased for button shadows (3 -> Add/Subtract 1/3 off Full Value)
|
||||
|
||||
uint16_t c_light,c_dark; //c_light and c_dark will be filled with a lighter and a darker color as the background color (for the shadows)
|
||||
uint8_t r,g,b;
|
||||
|
||||
//separate the channels of the 16-bit rgb565 color
|
||||
r=(bgcolor&0xF800)>>11;
|
||||
g=(bgcolor&0x07E0)>>5;
|
||||
b=(bgcolor&0x001F)>>0;
|
||||
|
||||
//For the light shadow color:
|
||||
if((r + 0x1F/BRIGHTNESS_VAL) > 0x1F) //Adding one third would exceed the maximum of the red channel
|
||||
c_light=0xF800; //Use full red
|
||||
else //adding one third to the red channel is fine
|
||||
c_light=(r+0x1F/BRIGHTNESS_VAL)<<11; //Use same red as in the background, but add one third
|
||||
if((g + 0x3F/BRIGHTNESS_VAL) > 0x3F) //same for the green channel
|
||||
c_light|=0x07E0;
|
||||
else
|
||||
c_light|=(g+0x3F/BRIGHTNESS_VAL)<<5;
|
||||
if((b + 0x1F/BRIGHTNESS_VAL) > 0x1F) //and the blue channel
|
||||
c_light|=0x0018;
|
||||
else
|
||||
c_light|=(b+0x1F/BRIGHTNESS_VAL)<<0;
|
||||
|
||||
//For the dark shadow color
|
||||
if(r > (0x1F/BRIGHTNESS_VAL)) //Subtracting one third would NOT exceed the minimum of the red channel
|
||||
c_dark=(r-0x1F/BRIGHTNESS_VAL)<<11; //Use same red as in the background, but subtract one third
|
||||
else //Subtracting one third would give us a number below zero
|
||||
c_dark=0x0000; //use no red channel
|
||||
if(g > (0x3F/BRIGHTNESS_VAL)) //Same for the green channel
|
||||
c_dark|=(g-0x3F/BRIGHTNESS_VAL)<<5;
|
||||
if(b > (0x1F/BRIGHTNESS_VAL)) //and the blue channel
|
||||
c_dark|=(b-0x1F/BRIGHTNESS_VAL)<<0;
|
||||
|
||||
//Assign the calculated shadows to out parameters
|
||||
if(light_shadow!=NULL) *light_shadow = c_light;
|
||||
if(dark_shadow!=NULL) *dark_shadow = c_dark;
|
||||
|
||||
}
|
||||
|
||||
//Callback which is called when the user touches the touch-area we created for the button
|
||||
void buttons_cb(void* touchArea, TOUCH_ACTION triggeredAction)
|
||||
{
|
||||
TOUCH_AREA_STRUCT * area = (TOUCH_AREA_STRUCT*)touchArea;
|
||||
BUTTON_STRUCT* button = (BUTTON_STRUCT*)touchArea;
|
||||
|
||||
uint16_t c_light,c_dark; //c_light and c_dark will be filled with a lighter and a darker color as the background color (for the shadows)
|
||||
calculate_shadows(button->bgcolor,&c_light,&c_dark);
|
||||
|
||||
switch(triggeredAction)
|
||||
{
|
||||
case PEN_DOWN: //If the user touches the area for the "first time"
|
||||
area->hookedActions=PEN_UP|PEN_LEAVE; //for the future we only want PEN_UP and PEN_LEAVE events
|
||||
|
||||
//Draw shadows
|
||||
tft_draw_line(button->base.x1+1,button->base.y1,button->base.x2-1,button->base.y1,c_dark); //North
|
||||
tft_draw_line(button->base.x1,button->base.y1+1,button->base.x1,button->base.y2-1,c_dark);//West
|
||||
tft_draw_line(button->base.x1+1,button->base.y2,button->base.x2-1,button->base.y2,c_light); //South
|
||||
tft_draw_line(button->base.x2,button->base.y1+1,button->base.x2,button->base.y2-1,c_light); //East
|
||||
break;
|
||||
case PEN_UP: //If the user took the pen away, while in the area (=button pressed!)
|
||||
case PEN_LEAVE: //or the user "slided out" of the area
|
||||
area->hookedActions=PEN_DOWN; //for the future we only want PEN_DOWN events
|
||||
|
||||
//Draw inverse shadows
|
||||
tft_draw_line(button->base.x1+1,button->base.y1,button->base.x2-1,button->base.y1,c_light); //North
|
||||
tft_draw_line(button->base.x1,button->base.y1+1,button->base.x1,button->base.y2-1,c_light);//West
|
||||
tft_draw_line(button->base.x1+1,button->base.y2,button->base.x2-1,button->base.y2,c_dark); //South
|
||||
tft_draw_line(button->base.x2,button->base.y1+1,button->base.x2,button->base.y2-1,c_dark); //East
|
||||
|
||||
if(triggeredAction==PEN_UP && button->callback!=NULL) //If the button got "pressed" instead of left, and the user provided a callback
|
||||
button->callback(button); //execute the user callback
|
||||
break;
|
||||
default:break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
bool gui_button_add(BUTTON_STRUCT* button)
|
||||
{
|
||||
if(touch_have_empty(1)) //Check if the touch module can handle one additional area
|
||||
{
|
||||
//Calculate width and height of the button text
|
||||
unsigned int strwidth=tft_font_width(button->font)*strlen(button->text);
|
||||
unsigned char strheight=tft_font_height(button->font);
|
||||
|
||||
button->base.hookedActions=PEN_DOWN; //At first we are interested in PEN_DOWN events
|
||||
button->base.callback = buttons_cb; //Use our own callback for the touch area events
|
||||
|
||||
if(button->base.x2==AUTO) { //The user wants us to calculate the button width automatically
|
||||
//Use string width + half of a character width as button width
|
||||
button->base.x2= button->base.x1 -1 + strwidth+(tft_font_width(button->font)/2);
|
||||
} else if((button->base.x2-button->base.x1+1)<(strwidth+2)) { //the provided width is too small to fit the entire text
|
||||
return false; //report error
|
||||
}
|
||||
|
||||
if(button->base.y2==AUTO) { //The user wants us to calculate the button height automatically
|
||||
//Use one and a half character heights as button height
|
||||
button->base.y2=button->base.y1 -1 +strheight+(strheight/2);
|
||||
} else if((button->base.y2-button->base.y1+1)<(strheight+2)) { //the provided height is too small to fit the text
|
||||
return false;
|
||||
}
|
||||
gui_button_redraw(button); //call the redraw method, which will take care of drawing the entire button
|
||||
return touch_register_area(&button->base); //Register the touch area and receive events for this button, from now on
|
||||
}
|
||||
|
||||
return false; //no more touch areas left
|
||||
}
|
||||
|
||||
void gui_button_redraw(BUTTON_STRUCT* button)
|
||||
{
|
||||
//Calculate text dimensions and shadow colors
|
||||
unsigned int strwidth=tft_font_width(button->font)*strlen(button->text);
|
||||
unsigned char strheight=tft_font_height(button->font);
|
||||
uint16_t c_light,c_dark;
|
||||
calculate_shadows(button->bgcolor,&c_light,&c_dark);
|
||||
|
||||
//Draw the background and the 4 lines (shadow colors)
|
||||
tft_fill_rectangle(button->base.x1+1,button->base.y1+1,button->base.x2-1,button->base.y2-1,button->bgcolor);
|
||||
tft_draw_line(button->base.x1+1,button->base.y1,button->base.x2-1,button->base.y1,c_light); //North
|
||||
tft_draw_line(button->base.x1,button->base.y1+1,button->base.x1,button->base.y2-1,c_light);//West
|
||||
tft_draw_line(button->base.x1+1,button->base.y2,button->base.x2-1,button->base.y2,c_dark); //South
|
||||
tft_draw_line(button->base.x2,button->base.y1+1,button->base.x2,button->base.y2-1,c_dark); //East
|
||||
|
||||
//Draw the text
|
||||
tft_print_line(button->base.x1+(button->base.x2-button->base.x1+1-strwidth)/2,button->base.y1+(button->base.y2-button->base.y1+1-strheight)/2,button->txtcolor,button->bgcolor,button->font,button->text);
|
||||
|
||||
}
|
||||
|
||||
void gui_button_remove(BUTTON_STRUCT* button)
|
||||
{
|
||||
//We only need to unregister the touch area, as we have not allocated anything else
|
||||
touch_unregister_area((TOUCH_AREA_STRUCT*)button);
|
||||
}
|
||||
/**************************************************************************************************************************************
|
||||
* Project: discoverpixy
|
||||
* Website: https://github.com/t-moe/discoverpixy
|
||||
* Authors: Aaron Schmocker, Timo Lang
|
||||
* Institution: BFH Bern University of Applied Sciences
|
||||
* File: common/gui/button.c
|
||||
*
|
||||
* Version History:
|
||||
* Date Autor Email SHA Changes
|
||||
* 2015-04-27 timolang@gmail.com 7c9eabc Added button support.
|
||||
* 2015-05-17 timolang@gmail.com 2d46336 Improved comments in implementation of button, checkbox, numupdown, tft, touch and screen modules/submodules.
|
||||
*
|
||||
**************************************************************************************************************************************/
|
||||
|
||||
#include "tft.h"
|
||||
#include "touch.h"
|
||||
#include "button.h"
|
||||
#include <string.h>
|
||||
|
||||
/* The Idea is as follows:
|
||||
* When the user add's a button we create a touch area for that region and wait for PEN_DOWN events.
|
||||
* Once the user puts the pen down in this area we'll redraw the button with different shadows (feedback)
|
||||
* and we'll now wait on PEN_UP or PEN_LEAVE events.
|
||||
* If the user takes the pen away while in the area (PEN_UP), we call the provided user callback
|
||||
* Otherwise (PEN_LEAVE) we only restore the initial shadows
|
||||
*/
|
||||
|
||||
/* Possible improvements:
|
||||
* Move the button by 1 pixel while he is pressed, to create a "full 3d" experience
|
||||
* Add events for the case when the button is pressed for a long time, without release
|
||||
*/
|
||||
|
||||
//Method to calculate the shadow colors used to create the "3d" effect
|
||||
void calculate_shadows(uint16_t bgcolor, uint16_t* light_shadow, uint16_t* dark_shadow)
|
||||
{
|
||||
#define BRIGHTNESS_VAL 3 //How much the Brightness is in/decreased for button shadows (3 -> Add/Subtract 1/3 off Full Value)
|
||||
|
||||
uint16_t c_light, c_dark; //c_light and c_dark will be filled with a lighter and a darker color as the background color (for the shadows)
|
||||
uint8_t r, g, b;
|
||||
|
||||
//separate the channels of the 16-bit rgb565 color
|
||||
r = (bgcolor & 0xF800) >> 11;
|
||||
g = (bgcolor & 0x07E0) >> 5;
|
||||
b = (bgcolor & 0x001F) >> 0;
|
||||
|
||||
//For the light shadow color:
|
||||
if ((r + 0x1F / BRIGHTNESS_VAL) > 0x1F) { //Adding one third would exceed the maximum of the red channel
|
||||
c_light = 0xF800; //Use full red
|
||||
} else { //adding one third to the red channel is fine
|
||||
c_light = (r + 0x1F / BRIGHTNESS_VAL) << 11; //Use same red as in the background, but add one third
|
||||
}
|
||||
|
||||
if ((g + 0x3F / BRIGHTNESS_VAL) > 0x3F) { //same for the green channel
|
||||
c_light |= 0x07E0;
|
||||
} else {
|
||||
c_light |= (g + 0x3F / BRIGHTNESS_VAL) << 5;
|
||||
}
|
||||
|
||||
if ((b + 0x1F / BRIGHTNESS_VAL) > 0x1F) { //and the blue channel
|
||||
c_light |= 0x0018;
|
||||
} else {
|
||||
c_light |= (b + 0x1F / BRIGHTNESS_VAL) << 0;
|
||||
}
|
||||
|
||||
//For the dark shadow color
|
||||
if (r > (0x1F / BRIGHTNESS_VAL)) { //Subtracting one third would NOT exceed the minimum of the red channel
|
||||
c_dark = (r - 0x1F / BRIGHTNESS_VAL) << 11; //Use same red as in the background, but subtract one third
|
||||
} else { //Subtracting one third would give us a number below zero
|
||||
c_dark = 0x0000; //use no red channel
|
||||
}
|
||||
|
||||
if (g > (0x3F / BRIGHTNESS_VAL)) { //Same for the green channel
|
||||
c_dark |= (g - 0x3F / BRIGHTNESS_VAL) << 5;
|
||||
}
|
||||
|
||||
if (b > (0x1F / BRIGHTNESS_VAL)) { //and the blue channel
|
||||
c_dark |= (b - 0x1F / BRIGHTNESS_VAL) << 0;
|
||||
}
|
||||
|
||||
//Assign the calculated shadows to out parameters
|
||||
if (light_shadow != NULL) {
|
||||
*light_shadow = c_light;
|
||||
}
|
||||
|
||||
if (dark_shadow != NULL) {
|
||||
*dark_shadow = c_dark;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
//Callback which is called when the user touches the touch-area we created for the button
|
||||
void buttons_cb(void* touchArea, TOUCH_ACTION triggeredAction)
|
||||
{
|
||||
TOUCH_AREA_STRUCT* area = (TOUCH_AREA_STRUCT*)touchArea;
|
||||
BUTTON_STRUCT* button = (BUTTON_STRUCT*)touchArea;
|
||||
|
||||
uint16_t c_light, c_dark; //c_light and c_dark will be filled with a lighter and a darker color as the background color (for the shadows)
|
||||
calculate_shadows(button->bgcolor, &c_light, &c_dark);
|
||||
|
||||
switch (triggeredAction) {
|
||||
case PEN_DOWN: //If the user touches the area for the "first time"
|
||||
area->hookedActions = PEN_UP | PEN_LEAVE; //for the future we only want PEN_UP and PEN_LEAVE events
|
||||
|
||||
//Draw shadows
|
||||
tft_draw_line(button->base.x1 + 1, button->base.y1, button->base.x2 - 1, button->base.y1, c_dark); //North
|
||||
tft_draw_line(button->base.x1, button->base.y1 + 1, button->base.x1, button->base.y2 - 1, c_dark); //West
|
||||
tft_draw_line(button->base.x1 + 1, button->base.y2, button->base.x2 - 1, button->base.y2, c_light); //South
|
||||
tft_draw_line(button->base.x2, button->base.y1 + 1, button->base.x2, button->base.y2 - 1, c_light); //East
|
||||
break;
|
||||
|
||||
case PEN_UP: //If the user took the pen away, while in the area (=button pressed!)
|
||||
case PEN_LEAVE: //or the user "slided out" of the area
|
||||
area->hookedActions = PEN_DOWN; //for the future we only want PEN_DOWN events
|
||||
|
||||
//Draw inverse shadows
|
||||
tft_draw_line(button->base.x1 + 1, button->base.y1, button->base.x2 - 1, button->base.y1, c_light); //North
|
||||
tft_draw_line(button->base.x1, button->base.y1 + 1, button->base.x1, button->base.y2 - 1, c_light); //West
|
||||
tft_draw_line(button->base.x1 + 1, button->base.y2, button->base.x2 - 1, button->base.y2, c_dark); //South
|
||||
tft_draw_line(button->base.x2, button->base.y1 + 1, button->base.x2, button->base.y2 - 1, c_dark); //East
|
||||
|
||||
if (triggeredAction == PEN_UP && button->callback != NULL) { //If the button got "pressed" instead of left, and the user provided a callback
|
||||
button->callback(button); //execute the user callback
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
bool gui_button_add(BUTTON_STRUCT* button)
|
||||
{
|
||||
if (touch_have_empty(1)) { //Check if the touch module can handle one additional area
|
||||
//Calculate width and height of the button text
|
||||
unsigned int strwidth = tft_font_width(button->font) * strlen(button->text);
|
||||
unsigned char strheight = tft_font_height(button->font);
|
||||
|
||||
button->base.hookedActions = PEN_DOWN; //At first we are interested in PEN_DOWN events
|
||||
button->base.callback = buttons_cb; //Use our own callback for the touch area events
|
||||
|
||||
if (button->base.x2 == AUTO) { //The user wants us to calculate the button width automatically
|
||||
//Use string width + half of a character width as button width
|
||||
button->base.x2 = button->base.x1 - 1 + strwidth + (tft_font_width(button->font) / 2);
|
||||
} else if ((button->base.x2 - button->base.x1 + 1) < (strwidth + 2)) { //the provided width is too small to fit the entire text
|
||||
return false; //report error
|
||||
}
|
||||
|
||||
if (button->base.y2 == AUTO) { //The user wants us to calculate the button height automatically
|
||||
//Use one and a half character heights as button height
|
||||
button->base.y2 = button->base.y1 - 1 + strheight + (strheight / 2);
|
||||
} else if ((button->base.y2 - button->base.y1 + 1) < (strheight + 2)) { //the provided height is too small to fit the text
|
||||
return false;
|
||||
}
|
||||
|
||||
gui_button_redraw(button); //call the redraw method, which will take care of drawing the entire button
|
||||
return touch_register_area(&button->base); //Register the touch area and receive events for this button, from now on
|
||||
}
|
||||
|
||||
return false; //no more touch areas left
|
||||
}
|
||||
|
||||
void gui_button_redraw(BUTTON_STRUCT* button)
|
||||
{
|
||||
//Calculate text dimensions and shadow colors
|
||||
unsigned int strwidth = tft_font_width(button->font) * strlen(button->text);
|
||||
unsigned char strheight = tft_font_height(button->font);
|
||||
uint16_t c_light, c_dark;
|
||||
calculate_shadows(button->bgcolor, &c_light, &c_dark);
|
||||
|
||||
//Draw the background and the 4 lines (shadow colors)
|
||||
tft_fill_rectangle(button->base.x1 + 1, button->base.y1 + 1, button->base.x2 - 1, button->base.y2 - 1, button->bgcolor);
|
||||
tft_draw_line(button->base.x1 + 1, button->base.y1, button->base.x2 - 1, button->base.y1, c_light); //North
|
||||
tft_draw_line(button->base.x1, button->base.y1 + 1, button->base.x1, button->base.y2 - 1, c_light); //West
|
||||
tft_draw_line(button->base.x1 + 1, button->base.y2, button->base.x2 - 1, button->base.y2, c_dark); //South
|
||||
tft_draw_line(button->base.x2, button->base.y1 + 1, button->base.x2, button->base.y2 - 1, c_dark); //East
|
||||
|
||||
//Draw the text
|
||||
tft_print_line(button->base.x1 + (button->base.x2 - button->base.x1 + 1 - strwidth) / 2, button->base.y1 + (button->base.y2 - button->base.y1 + 1 - strheight) / 2, button->txtcolor, button->bgcolor, button->font, button->text);
|
||||
|
||||
}
|
||||
|
||||
void gui_button_remove(BUTTON_STRUCT* button)
|
||||
{
|
||||
//We only need to unregister the touch area, as we have not allocated anything else
|
||||
touch_unregister_area((TOUCH_AREA_STRUCT*)button);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user