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Added text helper functions (enlarge, bg color, etc.)

This commit is contained in:
KTOWN 2013-10-14 21:11:00 +02:00
parent ae0b2d2b61
commit 07abc76eed
3 changed files with 37 additions and 2 deletions
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25
Adafruit_RA8875.cpp
View File

@ -291,6 +291,31 @@ void Adafruit_RA8875::textTransparent(uint16_t foreColor)
writeData(temp);
}
/**************************************************************************/
/*!
Sets the text enlarge settings, using one of the following values:
0 = 1x zoom
1 = 2x zoom
2 = 3x zoom
3 = 4x zoom
@args scale[in] The zoom factor (0..3 for 1-4x zoom)
*/
/**************************************************************************/
void Adafruit_RA8875::textEnlarge(uint8_t scale)
{
if (scale > 3) scale = 3;
/* Set font size flags */
writeCommand(0x22);
uint8_t temp = readData();
temp &= ~(0xF); // Clears bits 0..3
temp |= scale << 2;
temp |= scale;
writeData(temp);
}
/**************************************************************************/
/*!
Renders some text on the screen when in text mode

1
Adafruit_RA8875.h
View File

@ -64,6 +64,7 @@ class Adafruit_RA8875 : public Adafruit_GFX {
void textMode(void);
void textColor(uint16_t foreColor, uint16_t bgColor);
void textTransparent(uint16_t foreColor);
void textEnlarge(uint8_t scale);
void textWrite(uint8_t* buffer, uint16_t len);
void pushPixels(uint32_t num, uint16_t p);

13
examples/textmode/textmode.ino
View File

@ -27,9 +27,18 @@ void setup()
tft.fillScreen(RA8875_BLACK);
tft.textMode();
// tft.textEnlarge(0);
// tft.textColor(RA8875_WHITE, RA8875_RED);
tft.textTransparent(RA8875_WHITE);
uint8_t string[14] = "Hello, World!";
tft.textWrite(string, 14);
uint8_t string[15] = "Hello, World! ";
tft.textWrite(string, 15);
tft.textWrite(string, 15);
tft.textWrite(string, 15);
tft.textWrite(string, 15);
tft.textWrite(string, 15);
tft.textWrite(string, 15);
tft.textWrite(string, 15);
tft.textWrite(string, 15);
}
void loop()