skylark-qmk/quantum/visualizer/lcd_keyframes.c
Fred Sundvik 5c251b5575 Fix buffer overrun in lcd_keyframes
This would often cause the keyboard to crash when restarting the
computer.
2017-04-13 21:40:06 +03:00

188 lines
5.8 KiB
C

/* Copyright 2017 Fred Sundvik
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "lcd_keyframes.h"
#include <string.h>
#include "action_util.h"
#include "led.h"
#include "resources/resources.h"
bool lcd_keyframe_display_layer_text(keyframe_animation_t* animation, visualizer_state_t* state) {
(void)animation;
gdispClear(White);
gdispDrawString(0, 10, state->layer_text, state->font_dejavusansbold12, Black);
return false;
}
static void format_layer_bitmap_string(uint16_t default_layer, uint16_t layer, char* buffer) {
for (int i=0; i<16;i++)
{
uint32_t mask = (1u << i);
if (default_layer & mask) {
if (layer & mask) {
*buffer = 'B';
} else {
*buffer = 'D';
}
} else if (layer & mask) {
*buffer = '1';
} else {
*buffer = '0';
}
++buffer;
if (i==3 || i==7 || i==11) {
*buffer = ' ';
++buffer;
}
}
*buffer = 0;
}
bool lcd_keyframe_display_layer_bitmap(keyframe_animation_t* animation, visualizer_state_t* state) {
(void)animation;
const char* layer_help = "1=On D=Default B=Both";
char layer_buffer[16 + 4]; // 3 spaces and one null terminator
gdispClear(White);
gdispDrawString(0, 0, layer_help, state->font_fixed5x8, Black);
format_layer_bitmap_string(state->status.default_layer, state->status.layer, layer_buffer);
gdispDrawString(0, 10, layer_buffer, state->font_fixed5x8, Black);
format_layer_bitmap_string(state->status.default_layer >> 16, state->status.layer >> 16, layer_buffer);
gdispDrawString(0, 20, layer_buffer, state->font_fixed5x8, Black);
return false;
}
static void format_mods_bitmap_string(uint8_t mods, char* buffer) {
*buffer = ' ';
++buffer;
for (int i = 0; i<8; i++)
{
uint32_t mask = (1u << i);
if (mods & mask) {
*buffer = '1';
} else {
*buffer = '0';
}
++buffer;
if (i==3) {
*buffer = ' ';
++buffer;
}
}
*buffer = 0;
}
bool lcd_keyframe_display_mods_bitmap(keyframe_animation_t* animation, visualizer_state_t* state) {
(void)animation;
const char* title = "Modifier states";
const char* mods_header = " CSAG CSAG ";
char status_buffer[12];
gdispClear(White);
gdispDrawString(0, 0, title, state->font_fixed5x8, Black);
gdispDrawString(0, 10, mods_header, state->font_fixed5x8, Black);
format_mods_bitmap_string(state->status.mods, status_buffer);
gdispDrawString(0, 20, status_buffer, state->font_fixed5x8, Black);
return false;
}
#define LED_STATE_STRING_SIZE sizeof("NUM CAPS SCRL COMP KANA")
static void get_led_state_string(char* output, visualizer_state_t* state) {
uint8_t pos = 0;
if (state->status.leds & (1u << USB_LED_NUM_LOCK)) {
memcpy(output + pos, "NUM ", 4);
pos += 4;
}
if (state->status.leds & (1u << USB_LED_CAPS_LOCK)) {
memcpy(output + pos, "CAPS ", 5);
pos += 5;
}
if (state->status.leds & (1u << USB_LED_SCROLL_LOCK)) {
memcpy(output + pos, "SCRL ", 5);
pos += 5;
}
if (state->status.leds & (1u << USB_LED_COMPOSE)) {
memcpy(output + pos, "COMP ", 5);
pos += 5;
}
if (state->status.leds & (1u << USB_LED_KANA)) {
memcpy(output + pos, "KANA", 4);
pos += 4;
}
output[pos] = 0;
}
bool lcd_keyframe_display_led_states(keyframe_animation_t* animation, visualizer_state_t* state)
{
(void)animation;
char output[LED_STATE_STRING_SIZE];
get_led_state_string(output, state);
gdispClear(White);
gdispDrawString(0, 10, output, state->font_dejavusansbold12, Black);
return false;
}
bool lcd_keyframe_display_layer_and_led_states(keyframe_animation_t* animation, visualizer_state_t* state) {
(void)animation;
gdispClear(White);
uint8_t y = 10;
if (state->status.leds) {
char output[LED_STATE_STRING_SIZE];
get_led_state_string(output, state);
gdispDrawString(0, 1, output, state->font_dejavusansbold12, Black);
y = 17;
}
gdispDrawString(0, y, state->layer_text, state->font_dejavusansbold12, Black);
return false;
}
bool lcd_keyframe_draw_logo(keyframe_animation_t* animation, visualizer_state_t* state) {
(void)state;
(void)animation;
// Read the uGFX documentation for information how to use the displays
// http://wiki.ugfx.org/index.php/Main_Page
gdispClear(White);
// You can use static variables for things that can't be found in the animation
// or state structs, here we use the image
//gdispGBlitArea is a tricky function to use since it supports blitting part of the image
// if you have full screen image, then just use 128 and 32 for both source and target dimensions
gdispGBlitArea(GDISP, 0, 0, 128, 32, 0, 0, 128, (pixel_t*)resource_lcd_logo);
return false;
}
bool lcd_keyframe_disable(keyframe_animation_t* animation, visualizer_state_t* state) {
(void)animation;
(void)state;
gdispSetPowerMode(powerOff);
return false;
}
bool lcd_keyframe_enable(keyframe_animation_t* animation, visualizer_state_t* state) {
(void)animation;
(void)state;
gdispSetPowerMode(powerOn);
return false;
}