/**
* The range is the height - handle length.
* r = h - handle;
* handle is the element length of the handle* length of one element.
* handle = r / ( num ) * hl
*
* r = h - r / ( num) *hl
* r*num = num*h - r*hl
* r*num+r*hl = num*h;
* r ( num+hl ) = num*h
* r = (num*h)/(num+hl)
*/
static void scrollbar_draw ( widget *wid, cairo_t *draw )
{
scrollbar *sb = (scrollbar *) wid;
unsigned int wh = widget_padding_get_remaining_height ( wid );
// Calculate position and size.
unsigned int r = ( sb->length * wh ) / ( (double) ( sb->length + sb->pos_length ) );
unsigned int handle = wid->h - r;
double sec = ( ( r ) / (double) ( sb->length - 1 ) );
unsigned int height = handle;
unsigned int y = sb->pos * sec;
// Set max pos.
y = MIN ( y, wh - handle );
// Never go out of bar.
height = MAX ( 2, height );
// Cap length;
rofi_theme_get_color ( WIDGET ( sb ), "handle-color", draw );
cairo_rectangle ( draw,
widget_padding_get_left ( wid ),
widget_padding_get_top ( wid ) + y,
widget_padding_get_remaining_width ( wid ),
height );
cairo_fill ( draw );
}
void widget_draw ( widget *widget, cairo_t *d )
{
// Check if enabled and if draw is implemented.
if ( widget && widget->enabled && widget->draw ) {
// Don't draw if there is no space.
if ( widget->h < 1 || widget->w < 1 ) {
widget->need_redraw = FALSE;
return;
}
// Store current state.
cairo_save ( d );
int margin_left = distance_get_pixel ( widget->margin.left, ORIENTATION_HORIZONTAL );
int margin_top = distance_get_pixel ( widget->margin.top, ORIENTATION_VERTICAL );
int margin_right = distance_get_pixel ( widget->margin.right, ORIENTATION_HORIZONTAL );
int margin_bottom = distance_get_pixel ( widget->margin.bottom, ORIENTATION_VERTICAL );
// Define a clipmask so we won't draw outside out widget.
cairo_rectangle ( d,
widget->x + margin_left,
widget->y + margin_top,
widget->w - margin_right - margin_left,
widget->h - margin_top - margin_bottom
);
cairo_clip ( d );
cairo_set_source_rgba ( d, 1.0, 1.0, 1.0, 1.0 );
rofi_theme_get_color ( widget, "background", d );
cairo_paint ( d );
// Set new x/y possition.
cairo_translate ( d, widget->x, widget->y );
cairo_set_source_rgba ( d, 0.0, 0.0, 0.0, 1.0 );
int left = distance_get_pixel ( widget->border.left, ORIENTATION_HORIZONTAL );
int right = distance_get_pixel ( widget->border.right, ORIENTATION_HORIZONTAL );
int top = distance_get_pixel ( widget->border.top, ORIENTATION_VERTICAL );
int bottom = distance_get_pixel ( widget->border.bottom, ORIENTATION_VERTICAL );
if ( left || top || right || bottom ) {
cairo_save ( d );
rofi_theme_get_color ( widget, "foreground", d );
if ( left > 0 ) {
cairo_set_line_width ( d, left );
distance_get_linestyle ( widget->border.left, d );
cairo_move_to ( d, margin_left + left / 2.0, margin_top );
cairo_line_to ( d, margin_left + left / 2.0, widget->h - margin_bottom );
cairo_stroke ( d );
}
if ( right > 0 ) {
cairo_set_line_width ( d, right );
distance_get_linestyle ( widget->border.right, d );
cairo_move_to ( d, widget->w - margin_right - right / 2.0, 0 );
cairo_line_to ( d, widget->w - margin_right - right / 2.0, widget->h - margin_bottom );
cairo_stroke ( d );
}
if ( top > 0 ) {
cairo_set_line_width ( d, top );
distance_get_linestyle ( widget->border.top, d );
cairo_move_to ( d, margin_left, margin_top + top / 2.0 );
cairo_line_to ( d, widget->w - margin_right, margin_top + top / 2.0 );
cairo_stroke ( d );
}
if ( bottom > 0 ) {
cairo_set_line_width ( d, bottom );
distance_get_linestyle ( widget->border.bottom, d );
cairo_move_to ( d, margin_left, widget->h - bottom / 2.0 - margin_bottom );
cairo_line_to ( d, widget->w - margin_right, widget->h - bottom / 2.0 - margin_bottom );
cairo_stroke ( d );
}
cairo_restore ( d );
}
widget->draw ( widget, d );
widget->need_redraw = FALSE;
cairo_restore ( d );
}
}
static void texbox_update ( textbox *tb )
{
if ( tb->update ) {
unsigned int offset = ( tb->flags & TB_INDICATOR ) ? DOT_OFFSET : 0;
if ( tb->main_surface ) {
cairo_destroy ( tb->main_draw );
cairo_surface_destroy ( tb->main_surface );
tb->main_draw = NULL;
tb->main_surface = NULL;
}
tb->main_surface = cairo_image_surface_create ( CAIRO_FORMAT_ARGB32, tb->widget.w, tb->widget.h );
tb->main_draw = cairo_create ( tb->main_surface );
cairo_set_operator ( tb->main_draw, CAIRO_OPERATOR_OVER );
pango_cairo_update_layout ( tb->main_draw, tb->layout );
int font_height = textbox_get_font_height ( tb );
int cursor_x = 0;
int cursor_y = 0;
int cursor_width = 2; //MAX ( 2, font_height / 10 );
int cursor_height = font_height;
if ( tb->changed ) {
__textbox_update_pango_text ( tb );
}
if ( tb->flags & TB_EDITABLE ) {
// We want to place the cursor based on the text shown.
const char *text = pango_layout_get_text ( tb->layout );
// Clamp the position, should not be needed, but we are paranoid.
int cursor_offset = MIN ( tb->cursor, g_utf8_strlen ( text, -1 ) );
PangoRectangle pos;
// convert to byte location.
char *offset = g_utf8_offset_to_pointer ( text, cursor_offset );
pango_layout_get_cursor_pos ( tb->layout, offset - text, &pos, NULL );
cursor_x = pos.x / PANGO_SCALE;
cursor_y = pos.y / PANGO_SCALE;
cursor_height = pos.height / PANGO_SCALE;
}
// Skip the side MARGIN on the X axis.
int x = widget_padding_get_left ( WIDGET ( tb ) ) + offset;
int y = 0;
if ( tb->flags & TB_RIGHT ) {
int line_width = 0;
// Get actual width.
pango_layout_get_pixel_size ( tb->layout, &line_width, NULL );
x = ( tb->widget.w - line_width - widget_padding_get_right ( WIDGET ( tb ) ) - offset );
}
else if ( tb->flags & TB_CENTER ) {
int tw = textbox_get_font_width ( tb );
x = ( ( tb->widget.w - tw - widget_padding_get_padding_width ( WIDGET ( tb ) ) - offset ) ) / 2;
}
y = widget_padding_get_top ( WIDGET ( tb ) ) + ( pango_font_metrics_get_ascent ( p_metrics ) - pango_layout_get_baseline ( tb->layout ) ) / PANGO_SCALE;
rofi_theme_get_color ( WIDGET ( tb ), "foreground", tb->main_draw );
// Text
rofi_theme_get_color ( WIDGET ( tb ), "text", tb->main_draw );
// draw the cursor
if ( tb->flags & TB_EDITABLE && tb->blink ) {
cairo_rectangle ( tb->main_draw, x + cursor_x, y + cursor_y, cursor_width, cursor_height );
cairo_fill ( tb->main_draw );
}
// Set ARGB
// We need to set over, otherwise subpixel hinting wont work.
//cairo_set_operator ( tb->main_draw, CAIRO_OPERATOR_OVER );
cairo_move_to ( tb->main_draw, x, y );
pango_cairo_show_layout ( tb->main_draw, tb->layout );
if ( ( tb->flags & TB_INDICATOR ) == TB_INDICATOR && ( tb->tbft & ( SELECTED ) ) ) {
cairo_arc ( tb->main_draw, DOT_OFFSET / 2.0, tb->widget.h / 2.0, 2.0, 0, 2.0 * M_PI );
cairo_fill ( tb->main_draw );
}
tb->update = FALSE;
}
}
