Hello,
I have some questions about the use of PG_GROP_TEXT for the
implementation the Waba (http://waba.sourceforge.net) port to
PicoGUI.
- pgSizeText(). After some tests, I think it compute not in a
correct way. To have correct size, we have to substract a
w_nothing value calculate with :
pgSizeText( &w_nothing, &h, theFont, pgNewString( "" ).
- when writing a text, we always have a small space just before
it (corresponding to w_nothing / 2 ).
- color selection for text doesn't work. Or I don't understand
how to use.
Attached to this email is a small sample with all the points.
The main question is "Is this the real way of use, or is this
a bug ? (for the position/size problems), and How to use color ?"
Thanks in advance.
Olivier
--
Olivier Bornet SMARTDATA SA
[EMAIL PROTECTED] Centre du Parc
http://www.smartdata.ch av. des Prés-Beudin 20
Phone +41-27-723'55'03 1920 Martigny
Fax +41-27-723'55'19 Phone +41-27-723'55'18
#include <picogui.h>
#define MY_TEXT1 "Hello, crual World"
#define MY_TEXT2 "Hello, "
#define MY_TEXT3 "crual"
#define POS_X 50
#define POS_Y 50
#define RED 0x00FF0000
#define GREEN 0x0000FF00
#define BLUE 0x000000FF
#define BLACK 0x00000000
int main(int argc,char **argv) {
pghandle w;
int width_nothing;
int height, width;
/* init */
pgInit( argc, argv );
pgRegisterApp( PG_APP_NORMAL, "Canvas Text", 0 );
w = pgNewWidget( PG_WIDGET_CANVAS, 0, 0 );
/* write the text */
pgWriteCmd( w, PGCANVAS_GROP, 5, PG_GROP_TEXT, POS_X, POS_Y, 1, 1 );
pgWriteCmd( w, PGCANVAS_SETGROP, 3, pgNewString( MY_TEXT1 ), 0, BLACK );
pgWriteCmd( w, PGCANVAS_COLORCONV, 1, 4);
/* get the size of nothing and the 1st part of the text */
pgSizeText( &width_nothing, &height, PGFONT_ANY, pgNewString( "" ));
pgSizeText( &width, &height, PGFONT_ANY, pgNewString( MY_TEXT2 ));
/* write the 2n part of the text in red */
pgWriteCmd( w, PGCANVAS_GROP, 5, PG_GROP_TEXT, POS_X + width - width_nothing, POS_Y
+ 10 , 1, 1 );
pgWriteCmd( w, PGCANVAS_SETGROP, 3, pgNewString( MY_TEXT3 ), 0, RED );
pgWriteCmd( w, PGCANVAS_COLORCONV, 1, 4);
/* draw lines representing size of MY_TEXT3 ...*/
/* ... horizontal */
pgWriteCmd( w, PGCANVAS_GROP, 5, PG_GROP_LINE, POS_Y, POS_Y - 5, width, 0 );
pgWriteCmd( w, PGCANVAS_SETGROP, 1, BLUE );
pgWriteCmd( w, PGCANVAS_COLORCONV, 1, 1 );
/* ... vertical */
pgWriteCmd( w, PGCANVAS_GROP, 5, PG_GROP_LINE, POS_X - 5, POS_Y, 0, height );
pgWriteCmd( w, PGCANVAS_SETGROP, 1, BLUE );
pgWriteCmd( w, PGCANVAS_COLORCONV, 1, 1 );
/* draw horizontal line representing width of nothing */
pgWriteCmd( w, PGCANVAS_GROP, 5, PG_GROP_LINE, POS_X, POS_Y - 10, width_nothing, 0
);
pgWriteCmd( w, PGCANVAS_SETGROP, 1, RED );
pgWriteCmd( w, PGCANVAS_COLORCONV, 1, 1 );
/* draw a small cross at the position where to write the text */
pgWriteCmd( w, PGCANVAS_GROP, 5, PG_GROP_LINE, POS_X, POS_Y - 3, 0, 6 );
pgWriteCmd( w, PGCANVAS_SETGROP, 1, GREEN );
pgWriteCmd( w, PGCANVAS_COLORCONV, 1, 1 );
pgWriteCmd( w, PGCANVAS_GROP, 5, PG_GROP_LINE, POS_X - 3, POS_Y, 6, 0 );
pgWriteCmd( w, PGCANVAS_SETGROP, 1, GREEN );
pgWriteCmd( w, PGCANVAS_COLORCONV, 1, 1 );
/* main loop */
pgEventLoop();
}
