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Add justification option for text rendering

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This commit is contained in:
Reed Nightingale 2020-01-27 23:08:32 -08:00
parent c013281a31
commit 0417907d03
2 changed files with 19 additions and 3 deletions
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13
nano_gui.cpp
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@ -228,7 +228,8 @@ void displayRawText(char *text, int x1, int y1, int w, int color, int background
tft.print(text);
}
void displayText(char *text, int x1, int y1, int w, int h, int color, int background, int border) {
void displayText(char *text, int x1, int y1, int w, int h, int color, int background, int border, TextJustification_e justification)
{
displayFillrect(x1, y1, w ,h, background);
displayRect(x1, y1, w ,h, border);
@ -237,7 +238,15 @@ void displayText(char *text, int x1, int y1, int w, int h, int color, int backgr
uint16_t width_out;
uint16_t height_out;
tft.getTextBounds(text,x1,y1,&x1_out,&y1_out,&width_out,&height_out,w);
x1 += (w - ( (int32_t)width_out + (x1_out-x1)))/2;
if(TextJustification_e::Center == justification){
x1 += (w - ( (int32_t)width_out + (x1_out-x1)))/2;
}
else if(TextJustification_e::Right == justification){
x1 += w - ((int32_t)width_out + (x1_out-x1));
}
else{
x1 += 2;//Give a little bit of padding from the border
}
y1 += (ubitx_font->yAdvance + h - ( (int32_t)height_out))/2;
displayRawText(text,x1,y1,w,color,background);
}

9
nano_gui.h
View File

@ -7,6 +7,13 @@ struct Point {
};
extern struct Point ts_point;
enum TextJustification_e : uint8_t
{
Left,
Right,
Center
};
void displayInit();
void displayClear(unsigned int color);
void displayPixel(unsigned int x, unsigned int y, unsigned int c);
@ -16,7 +23,7 @@ void displayRect(unsigned int x,unsigned int y,unsigned int w,unsigned int h,uns
void displayFillrect(unsigned int x,unsigned int y,unsigned int w,unsigned int h,unsigned int c);
void displayChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg);
void displayRawText(char *text, int x1, int y1, int color, int background);
void displayText(char *text, int x1, int y1, int w, int h, int color, int background, int border);
void displayText(char *text, int x1, int y1, int w, int h, int color, int background, int border, TextJustification_e justification = TextJustification_e::Center);
void formatFreq(uint32_t freq, char* buff, uint16_t buff_size);