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Better way of getting font height. Use ascent and descent.

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This commit is contained in:
Dave Davenport 2015-03-19 19:58:05 +01:00
parent 7a4ef111e8
commit 9530f195d1
4 changed files with 41 additions and 24 deletions
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1
Changelog
View file

@ -6,6 +6,7 @@
Improvements:
- Add Ctrl(Shift)Tab to switch modi's.
- Auto size number of columns based on available columns.
- Better way to determine font height.
Cleanup:
- Do not lug argc,argv around everywhere.

1
include/textbox.h
View file

@ -240,4 +240,5 @@ void textbox_cursor_inc ( textbox *tb );
void textbox_delete ( textbox *tb, int pos, int dlen );
void textbox_moveresize ( textbox *tb, int x, int y, int w, int h );
int textbox_get_estimated_char_height ( void );
#endif //__TEXTBOX_H__

44
source/rofi.c
View file

@ -331,6 +331,7 @@ typedef struct MenuState
int *selected_line;
MenuReturn retv;
char **lines;
int line_height;
}MenuState;
/**
@ -830,9 +831,8 @@ static void menu_draw ( MenuState *state )
element_width = ( element_width - ( columns - 1 ) * LINE_MARGIN ) / columns;
}
int line_height = textbox_get_height ( state->text );
int element_height = line_height * config.element_height;
int y_offset = config.padding + line_height;
int element_height = state->line_height * config.element_height;
int y_offset = config.padding + state->line_height;
int x_offset = config.padding;
// Calculate number of visible rows.
unsigned int max_elements = MIN ( a_lines, state->max_rows * columns );
@ -878,19 +878,17 @@ static void menu_update ( MenuState *state )
state->max_elements, state->arrowbox_top,
state->arrowbox_bottom );
// Why do we need the special -1?
int line_height = textbox_get_height ( state->text );
XDrawLine ( display, main_window, gc, ( config.padding ),
line_height + ( config.padding ) + ( LINE_MARGIN ) / 2,
state->line_height + ( config.padding ) + ( LINE_MARGIN ) / 2,
state->w - ( ( config.padding ) ) - 1,
line_height + ( config.padding ) + ( LINE_MARGIN ) / 2 );
state->line_height + ( config.padding ) + ( LINE_MARGIN ) / 2 );
if ( config.sidebar_mode == TRUE ) {
int line_height = textbox_get_height ( state->text );
XDrawLine ( display, main_window, gc,
( config.padding ),
state->h - line_height - ( config.padding ) - 1,
state->h - state->line_height - ( config.padding ) - 1,
state->w - ( ( config.padding ) ) - 1,
state->h - line_height - ( config.padding ) - 1 );
state->h - state->line_height - ( config.padding ) - 1 );
for ( unsigned int j = 0; j < num_switchers; j++ ) {
textbox_draw ( switchers[j].tb );
}
@ -963,13 +961,12 @@ MenuReturn menu ( char **lines, unsigned int num_lines, char **input, char *prom
( config.padding ), ( config.padding ),
0, 0,
NORMAL, "*" );
state.line_height = textbox_get_estimated_char_height ();
// Height of a row.
int line_height = textbox_get_height ( state.case_indicator );
if ( config.menu_lines == 0 ) {
// Autosize it.
int h = mon.h - config.padding * 2 - LINE_MARGIN - config.menu_bw * 2;
int r = ( h ) / ( line_height * config.element_height ) - 1 - config.sidebar_mode;
int r = ( h ) / ( state.line_height * config.element_height ) - 1 - config.sidebar_mode;
state.menu_lines = r;
}
else {
@ -1007,11 +1004,11 @@ MenuReturn menu ( char **lines, unsigned int num_lines, char **input, char *prom
textbox_show ( state.case_indicator );
}
int element_height = line_height * config.element_height;
int element_height = state.line_height * config.element_height;
// filtered list display
state.boxes = g_malloc0_n ( state.max_elements, sizeof ( textbox* ) );
int y_offset = config.padding + line_height;
int y_offset = config.padding + state.line_height;
int x_offset = config.padding;
for ( i = 0; i < state.max_elements; i++ ) {
@ -1029,10 +1026,10 @@ MenuReturn menu ( char **lines, unsigned int num_lines, char **input, char *prom
( config.padding ), ( config.padding ),
0, 0, NORMAL,
"↓" );
textbox_move ( state.arrowbox_top,
state.w - config.padding - state.arrowbox_top->w,
config.padding + line_height + LINE_MARGIN );
config.padding + state.line_height + LINE_MARGIN );
// TODO calculate from top.
textbox_move ( state.arrowbox_bottom,
state.w - config.padding - state.arrowbox_bottom->w,
config.padding + state.max_rows * element_height + LINE_MARGIN );
@ -1046,11 +1043,11 @@ MenuReturn menu ( char **lines, unsigned int num_lines, char **input, char *prom
// resize window vertically to suit
// Subtract the margin of the last row.
state.h = line_height + element_height * state.max_rows + ( config.padding ) * 2 + LINE_MARGIN;
state.h = state.line_height + element_height * state.max_rows + ( config.padding ) * 2 + LINE_MARGIN;
// Add entry
if ( config.sidebar_mode == TRUE ) {
state.h += line_height + LINE_MARGIN;
state.h += state.line_height + LINE_MARGIN;
}
// Sidebar mode.
@ -1062,12 +1059,11 @@ MenuReturn menu ( char **lines, unsigned int num_lines, char **input, char *prom
calculate_window_position ( &state, &mon );
if ( config.sidebar_mode == TRUE ) {
int line_height = textbox_get_height ( state.text );
int width = ( state.w - ( 2 * ( config.padding ) ) ) / num_switchers;
int width = ( state.w - ( 2 * ( config.padding ) ) ) / num_switchers;
for ( unsigned int j = 0; j < num_switchers; j++ ) {
switchers[j].tb = textbox_create ( main_window, &vinfo, map, TB_CENTER,
config.padding + j * width, state.h - line_height - config.padding,
width, line_height, ( j == curr_switcher ) ? HIGHLIGHT : NORMAL, switchers[j].name );
config.padding + j * width, state.h - state.line_height - config.padding,
width, state.line_height, ( j == curr_switcher ) ? HIGHLIGHT : NORMAL, switchers[j].name );
textbox_show ( switchers[j].tb );
}
}
@ -1325,10 +1321,10 @@ void error_dialog ( const char *msg )
NORMAL,
( msg != NULL ) ? msg : "" );
textbox_show ( state.text );
int line_height = textbox_get_height ( state.text );
state.line_height = textbox_get_height ( state.text );
// resize window vertically to suit
state.h = line_height + ( config.padding ) * 2;
state.h = state.line_height + ( config.padding ) * 2;
// Move the window to the correct x,y position.
calculate_window_position ( &state, &mon );

19
source/textbox.c
View file

@ -681,3 +681,22 @@ double textbox_get_estimated_char_width ( void )
g_object_unref ( layout );
return ( width ) / (double) PANGO_SCALE;
}
int textbox_get_estimated_char_height ( void )
{
// Create a temp layout with right font.
PangoLayout *layout = pango_layout_new ( p_context );
// Set font.
PangoFontDescription *pfd = pango_font_description_from_string ( config.menu_font );
pango_layout_set_font_description ( layout, pfd );
pango_font_description_free ( pfd );
// Get width
PangoContext *context = pango_layout_get_context ( layout );
PangoFontMetrics *metric = pango_context_get_metrics ( context, NULL, NULL );
int height = pango_font_metrics_get_ascent ( metric ) + pango_font_metrics_get_descent ( metric );
pango_font_metrics_unref ( metric );
g_object_unref ( layout );
return ( height ) / PANGO_SCALE + 2 * SIDE_MARGIN;
}