119 lines
3.8 KiB
C
119 lines
3.8 KiB
C
#include "tft.h"
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#include "touch.h"
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#include "button.h"
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#include "numupdown.h"
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#include <stdio.h> //for sprintf
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#include <stddef.h> //for offsetof macro
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#include <stdlib.h> //for abs
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#define BASE_COLOR RGB(90,90,90)
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void button_up_cb(void* button)
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{
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NUMUPDOWN_STRUCT* element = button-offsetof(NUMUPDOWN_STRUCT,buttonUp);
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if(element->value<element->max) {
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element->value++;
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gui_numupdown_update(element);
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if(element->callback!=NULL) {
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element->callback(element,element->value);
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}
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}
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}
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void button_down_cb(void* button)
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{
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NUMUPDOWN_STRUCT* element = button-offsetof(NUMUPDOWN_STRUCT,buttonDown);
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if(element->value>element->min) {
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element->value--;
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gui_numupdown_update(element);
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if(element->callback!=NULL) {
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element->callback(element,element->value);
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}
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}
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}
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static uint8_t calc_text_width(int16_t val) {
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uint8_t width = 1 + (val<0); //1 if positive, 2 if negative (to let space for sign)
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val=abs(val);
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while(val>=10) {
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val/=10;
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width++;
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}
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return width;
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}
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bool gui_numupdown_add(NUMUPDOWN_STRUCT* numupdown)
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{
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if(touch_have_empty(2)) //We require 2 TouchAreas (for Buttons)
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{
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if(numupdown->min > numupdown->max) return false;
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if(numupdown->value > numupdown->max) {
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numupdown->value = numupdown->max;
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}
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if(numupdown->value < numupdown->min) {
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numupdown->value = numupdown->min;
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} else if(numupdown->value > numupdown->max) {
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numupdown->value = numupdown->max;
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}
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uint8_t tw1 = calc_text_width(numupdown->max);
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uint8_t tw2 = calc_text_width(numupdown->min);
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if(tw2 > tw1) tw1 = tw2;
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uint8_t width= tft_font_width(0)*(tw1+1);
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numupdown->buttonDown.base.x1=numupdown->x;
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numupdown->buttonDown.base.y1=numupdown->y;
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numupdown->buttonDown.base.x2=AUTO;
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numupdown->buttonDown.base.y2=numupdown->y+tft_font_height(0)*2;
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numupdown->buttonDown.text="-";
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numupdown->buttonDown.font=0;
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numupdown->buttonDown.bgcolor=BASE_COLOR;
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numupdown->buttonDown.txtcolor=WHITE;
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numupdown->buttonDown.callback = button_down_cb;
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gui_button_add(&numupdown->buttonDown);
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numupdown->buttonUp.base.x1=numupdown->buttonDown.base.x2+width+2;
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numupdown->buttonUp.base.y1=numupdown->y;
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numupdown->buttonUp.base.x2=AUTO;
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numupdown->buttonUp.base.y2=numupdown->y +tft_font_height(0)*2;
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numupdown->buttonUp.text="+";
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numupdown->buttonUp.font=0;
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numupdown->buttonUp.bgcolor=BASE_COLOR;
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numupdown->buttonUp.txtcolor=WHITE;
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numupdown->buttonUp.callback = button_up_cb;
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gui_button_add(&numupdown->buttonUp);
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tft_fill_rectangle(numupdown->buttonDown.base.x2+2,numupdown->y,numupdown->buttonDown.base.x2+width,numupdown->buttonUp.base.y2,BASE_COLOR);
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tft_print_formatted(numupdown->buttonDown.base.x2+2+tft_font_width(0)/2,numupdown->y+tft_font_height(0)/2,numupdown->fgcolor,BASE_COLOR,0,"%*d",tw1,numupdown->value);
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return true;
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}
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return false;
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}
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void gui_numupdown_remove(NUMUPDOWN_STRUCT* numupdown)
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{
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gui_button_remove(&numupdown->buttonUp);
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gui_button_remove(&numupdown->buttonDown);
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}
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void gui_numupdown_update(NUMUPDOWN_STRUCT* numupdown)
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{
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uint8_t tw1 = calc_text_width(numupdown->max);
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uint8_t tw2 = calc_text_width(numupdown->min);
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if(tw2 > tw1) tw1 = tw2;
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uint8_t width= tft_font_width(0)*(tw1+1);
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tft_fill_rectangle(numupdown->buttonDown.base.x2+2,numupdown->y,numupdown->buttonDown.base.x2+width,numupdown->buttonUp.base.y2,BASE_COLOR);
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tft_print_formatted(numupdown->buttonDown.base.x2+2+tft_font_width(0)/2,numupdown->y+tft_font_height(0)/2,numupdown->fgcolor,BASE_COLOR,0,"%*d",tw1,numupdown->value);
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}
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void gui_numupdown_redraw(NUMUPDOWN_STRUCT* numupdown)
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{
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gui_button_redraw(&numupdown->buttonUp);
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gui_button_redraw(&numupdown->buttonDown);
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gui_numupdown_update(numupdown);
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}
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