Font change

[zch9288]

Hello author I am from China, the following text is from the machine translation。 When using this library in China, you need to display Chinese characters， Now in order to change the font, I need to change the file，《ESP32-VirtualMatrixPanel-I2S-DMA.h》，#include <Fonts/XXXXX.h>andthis->display->setFont(&XXXXX),It's very inconvenient. The Library currently relies on the Adafruit GFX Library，At the same time, there is a U8g2 for Adafruit GFX, we can call U8G2 font。 Can you add this function to facilitate the use of any font。

Thank you

[board707]

Now in order to change the font, I need to change the file，《ESP32-VirtualMatrixPanel-I2S-DMA.h》

You don't need to change the library. As far I can see in the library code, you can add

#include <Fonts/XXXXX.h>

to your sketch and call

display->setFont(&XXXXX),

directly from the code.

[zch9288]

Thank you for your answer, this is really useful, but these work well for Western text repositories because they are relatively small,But for Chinese, it's not enough, like in U8G2, <const uint8_t u8g2_font_wqy16_t_gb2312[308472] U8G2_FONT_SECTION("u8g2_font_wqy16_t_gb2312") >.SO,Therefore, instead of using the .H file, the .C file is used, so the method just now cannot be used

[board707]

In your first comment you wrote that you have to add #include to the library and nothing about including the .c file. If you can do it with library - you could do it to the skecth as well. Or provide the minimal code example how do you use U8G2 fonts with this library.

[zch9288]

No C file is added, which is my problem, because the current library, if you want to change the font, only add H file When using

WS2812's library files previously.

include

include

include

include

U8G2_FOR_ADAFRUIT_GFX u8gf;

void setup() { Serial.begin(115200); EEPROM.begin(512); matrix.begin(); u8gf.begin(matrix); //This is increasing matrix.setTextWrap(false); u8gf.setFont(u8g2_font_wqy15_t_gb2312); }

When I added this statement u8gf.begin(matrix),I can just use it

u8gf.setFontMode(1);               //1使用u8g2透明模式(0是默认的)
u8gf.setFontDirection(2);          //2从左到右(0是默认值)2:14,1 0:0,14
u8gf.setForegroundColor(colourC);  //字体颜色
u8gf.setCursor(14, 1);             //正常起始点14,1;向右移动一半,7,1
u8gf.print(ch2); 

Now when I use this method

include

include

U8G2_FOR_ADAFRUIT_GFX u8gf;

void setup() { if (not dma_display->begin()) Serial.println("** !KABOOM! I2S memory allocation failed ***"); virtualDisp = new VirtualMatrixPanel((*dma_display), NUM_ROWS, NUM_COLS, PANEL_RES_X, PANEL_RES_Y, VIRTUAL_MATRIX_CHAIN_TYPE); u8gf.begin(virtualDisp); }

report an error：D:\我的资料库\Documents\Arduino\ChainedPanelsESP32S\ChainedPanelsESP32S.ino: In function 'void setup()': D:\我的资料库\Documents\Arduino\ChainedPanelsESP32S\ChainedPanelsESP32S.ino:201:25: error: no matching function for call to 'U8G2_FOR_ADAFRUIT_GFX::begin(VirtualMatrixPanel&)' In file included from D:\我的资料库\Documents\Arduino\ChainedPanelsESP32S\ChainedPanelsESP32S.ino:18: d:\�ҵ����Ͽ�\Documents\Arduino\libraries\U8g2_for_Adafruit_GFX\src/U8g2_for_Adafruit_GFX.h:152:10: note: candidate: 'void U8G2_FOR_ADAFRUIT_GFX::begin(Adafruit_GFX&)' void begin(Adafruit_GFX &gfx) { u8g2.gfx = &gfx; } ^~~~~ d:\�ҵ����Ͽ�\Documents\Arduino\libraries\U8g2_for_Adafruit_GFX\src/U8g2_for_Adafruit_GFX.h:152:10: note: no known conversion for argument 1 from 'VirtualMatrixPanel' to 'Adafruit_GFX&'

[board707]

U8G2_FOR_ADAFRUIT_GFX u8gf;

As far as I see, your problem is not with the font. The library U8G2 is a separate product, which has nothing to do with current library. You can't use U8G2 with VirtualMatrixPanel .

[zch9288]

include

U8G2_FOR_ADAFRUIT_GFX u8g2Fonts;

u8g2Fonts.begin(*virtualDisp); u8g2Fonts.setFontMode(1); u8g2Fonts.setFontDirection(0); u8g2Fonts.setFont(u8g2_font_wqy16_t_gb2312); u8g2Fonts.setForegroundColor(TFT_RED); u8g2Fonts.drawUTF8(80, 61, "中文");

I tried it, and that's it