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rofi/source/widgets/widget.c
Dave Davenport b51a20c433 limit radius when height/weight gets to small
2017-02-06 21:31:13 +01:00

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#include <glib.h>
#include <math.h>
#include "widgets/widget.h"
#include "widgets/widget-internal.h"
#include "theme.h"
/** Default padding. */
#define WIDGET_DEFAULT_PADDING 0
void widget_init ( widget *widget, const char *name )
{
widget->name = g_strdup ( name );
widget->def_padding = (Padding){ { WIDGET_DEFAULT_PADDING, PW_PX, SOLID }, { WIDGET_DEFAULT_PADDING, PW_PX, SOLID }, { WIDGET_DEFAULT_PADDING, PW_PX, SOLID }, { WIDGET_DEFAULT_PADDING, PW_PX, SOLID } };
widget->def_border = (Padding){ { 0, PW_PX, SOLID }, { 0, PW_PX, SOLID }, { 0, PW_PX, SOLID }, { 0, PW_PX, SOLID } };
widget->def_border_radius = (Padding){ { 0, PW_PX, SOLID }, { 0, PW_PX, SOLID }, { 0, PW_PX, SOLID }, { 0, PW_PX, SOLID } };
widget->def_margin = (Padding){ { 0, PW_PX, SOLID }, { 0, PW_PX, SOLID }, { 0, PW_PX, SOLID }, { 0, PW_PX, SOLID } };
widget->padding = rofi_theme_get_padding ( widget, "padding", widget->def_padding );
widget->border = rofi_theme_get_padding ( widget, "border", widget->def_border );
widget->border_radius = rofi_theme_get_padding ( widget, "border-radius", widget->def_border_radius );
widget->margin = rofi_theme_get_padding ( widget, "margin", widget->def_margin );
}
void widget_set_state ( widget *widget, const char *state )
{
if ( g_strcmp0 ( widget->state, state ) ) {
widget->state = state;
// Update border.
widget->border = rofi_theme_get_padding ( widget, "border", widget->def_border );
widget->border_radius = rofi_theme_get_padding ( widget, "border-radius", widget->def_border_radius );
widget_queue_redraw ( widget );
}
}
int widget_intersect ( const widget *widget, int x, int y )
{
if ( widget == NULL ) {
return FALSE;
}
if ( x >= ( widget->x ) && x < ( widget->x + widget->w ) ) {
if ( y >= ( widget->y ) && y < ( widget->y + widget->h ) ) {
return TRUE;
}
}
return FALSE;
}
void widget_resize ( widget *widget, short w, short h )
{
if ( widget != NULL ) {
if ( widget->resize != NULL ) {
if ( widget->w != w || widget->h != h ) {
widget->resize ( widget, w, h );
}
}
else {
widget->w = w;
widget->h = h;
}
// On a resize we always want to udpate.
widget_queue_redraw ( widget );
}
}
void widget_move ( widget *widget, short x, short y )
{
if ( widget != NULL ) {
widget->x = x;
widget->y = y;
}
}
gboolean widget_enabled ( widget *widget )
{
if ( widget != NULL ) {
return widget->enabled;
}
return FALSE;
}
void widget_enable ( widget *widget )
{
if ( widget && !widget->enabled ) {
widget->enabled = TRUE;
widget_update ( widget );
widget_update ( widget->parent );
widget_queue_redraw ( widget );
}
}
void widget_disable ( widget *widget )
{
if ( widget && widget->enabled ) {
widget->enabled = FALSE;
widget_update ( widget );
widget_update ( widget->parent );
widget_queue_redraw ( widget );
}
}
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 );
int radius_bl = distance_get_pixel ( widget->border_radius.left, ORIENTATION_HORIZONTAL );
int radius_tr = distance_get_pixel ( widget->border_radius.right, ORIENTATION_HORIZONTAL );
int radius_tl = distance_get_pixel ( widget->border_radius.top, ORIENTATION_VERTICAL );
int radius_br = distance_get_pixel ( widget->border_radius.bottom, ORIENTATION_VERTICAL );
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 ( (radius_bl + radius_tl) > (widget->h-margin_top-margin_bottom)) {
int j = (widget->h-margin_top-margin_bottom)/2.0;
radius_bl = MIN ( radius_bl, j );
radius_tl = MIN ( radius_tl, j );
}
if ( (radius_br + radius_tr) > (widget->h-margin_top-margin_bottom)) {
int j = (widget->h-margin_top-margin_bottom)/2.0;
radius_br = MIN ( radius_br, j);
radius_tr = MIN ( radius_tr, j);
}
if (( radius_tl + radius_tr ) > ( widget->w - margin_left - margin_right )) {
int j = ( widget->w - margin_left - margin_right )/2.0;
radius_tr = MIN ( radius_tr, j );
radius_tl = MIN ( radius_tl, j );
}
if (( radius_bl + radius_br ) > ( widget->w - margin_left - margin_right )) {
int j = ( widget->w - margin_left - margin_right )/2.0;
radius_br = MIN ( radius_br, j );
radius_bl = MIN ( radius_bl, j );
}
// Background painting.
// 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 );
cairo_arc ( d, margin_left + radius_tl + left / 2.0, margin_top + radius_tl + top / 2.0, radius_tl, -1.0 * M_PI, -0.5 * M_PI );
cairo_line_to ( d, widget->w - margin_right - radius_tr - right / 2.0, margin_top + top / 2.0 );
cairo_arc ( d, widget->w - margin_right - radius_tr - right / 2.0, margin_top + radius_tr + top / 2.0, radius_tr, -0.5 * M_PI, 0 * M_PI );
cairo_line_to ( d, widget->w - margin_right - right / 2.0, widget->h - margin_bottom - radius_br - bottom / 2.0 );
cairo_arc ( d, widget->w - margin_right - radius_br - right / 2.0, widget->h - margin_bottom - radius_br - bottom / 2.0, radius_br,
0.0 * M_PI, 0.5 * M_PI );
cairo_line_to ( d, margin_left + radius_bl + left / 2.0, widget->h - margin_bottom - bottom / 2.0 );
cairo_arc ( d, margin_left + radius_bl + left / 2.0, widget->h - margin_bottom - radius_bl - bottom / 2.0, radius_bl, 0.5 * M_PI, 1.0 * M_PI );
cairo_line_to ( d, margin_left + left / 2.0, margin_top + radius_tl + top / 2.0 );
cairo_close_path ( d );
cairo_set_source_rgba ( d, 1.0, 1.0, 1.0, 1.0 );
rofi_theme_get_color ( widget, "background", d );
cairo_fill ( d );
if ( left || top || right || bottom ) {
cairo_save ( d );
cairo_new_path ( 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 + radius_tl );
cairo_line_to ( d, margin_left + left / 2.0, widget->h - margin_bottom - radius_bl );
cairo_stroke ( d );
}
if ( radius_tl > 0 ) {
distance_get_linestyle ( widget->border.left, d );
if ( left == top ) {
cairo_set_line_width ( d, left );
cairo_arc ( d,
margin_left + left / 2.0 + radius_tl, margin_top + radius_tl + top / 2.0, radius_tl, -M_PI, -0.5 * M_PI );
cairo_stroke ( d );
}
else {
cairo_set_line_width ( d, 0 );
cairo_arc ( d, margin_left + radius_tl, margin_top + radius_tl, radius_tl, -M_PI, -0.5 * M_PI );
double a = ( radius_tl - left );
double b = ( radius_tl - top );
double be = acos ( ( 0.5 * sqrt ( a * a + b * b ) ) / radius_tl );
double a1 = atan ( a / b ) + be - 0.5 * M_PI;
double ai = 2 * ( 0.5 * M_PI - be );
cairo_arc_negative ( d,
margin_left + left + cos ( a1 ) * radius_tl,
margin_top + ( radius_tl ) + radius_tl * sin ( a1 ),
radius_tl, -M_PI + a1 + ai, -M_PI + a1 );
cairo_line_to ( d, margin_left, margin_top + radius_tl );
cairo_fill ( 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, margin_top + radius_tr );
cairo_line_to ( d, widget->w - margin_right - right / 2.0, widget->h - margin_bottom - radius_br );
cairo_stroke ( d );
}
if ( radius_tr > 0 ) {
distance_get_linestyle ( widget->border.right, d );
if ( top == right ) {
cairo_set_line_width ( d, right );
cairo_arc ( d, widget->w - margin_right - right / 2.0 - radius_tr, margin_top + radius_tr + right / 2.0, radius_tr, -0.5 * M_PI, 0 * M_PI );
cairo_stroke ( d );
}
else {
cairo_set_line_width ( d, 0 );
cairo_arc ( d, widget->w - margin_right - radius_tr, margin_top + radius_tr, radius_tr, -0.5 * M_PI, 0 );
double a = ( radius_tr - right );
double b = ( radius_tr - top );
double be = acos ( ( 0.5 * sqrt ( a * a + b * b ) ) / radius_tr );
double a1 = atan ( a / b ) + be - 0.5 * M_PI;
double ai = 2 * ( 0.5 * M_PI - be );
cairo_arc_negative ( d,
widget->w - margin_right - right - cos ( a1 ) * radius_tr,
margin_top + radius_tr * ( 1 + sin ( a1 ) ), radius_tr,
0 - a1, -a1 - ai );
cairo_line_to ( d, widget->w - margin_right - radius_tr, margin_top );
cairo_fill ( d );
}
}
if ( top > 0 ) {
cairo_set_line_width ( d, top );
distance_get_linestyle ( widget->border.top, d );
cairo_move_to ( d, margin_left + radius_tl, margin_top + top / 2.0 );
cairo_line_to ( d, widget->w - margin_right - radius_tr, margin_top + top / 2.0 );
cairo_stroke ( d );
}
if ( radius_bl > 0 ) {
distance_get_linestyle ( widget->border.left, d );
if ( bottom == left ) {
cairo_set_line_width ( d, left );
cairo_arc ( d, margin_left + left / 2.0 + radius_bl, widget->h - margin_bottom - radius_bl - left / 2.0, radius_bl, 0.5 * M_PI, 1.0 * M_PI );
cairo_stroke ( d );
}
else {
cairo_set_line_width ( d, 0 );
cairo_arc ( d, margin_left + radius_bl, widget->h - margin_bottom - radius_bl, radius_bl, 0.5 * M_PI, M_PI );
double a = ( radius_bl - left );
double b = ( radius_bl - bottom );
double be = acos ( ( 0.5 * sqrt ( a * a + b * b ) ) / radius_bl );
double a1 = atan ( a / b ) + be - 0.5 * M_PI;
double ai = 2 * ( 0.5 * M_PI - be );
cairo_arc_negative ( d,
margin_left + left + cos ( a1 ) * radius_bl,
widget->h - margin_bottom - radius_bl * ( 1 + sin ( a1 ) ), radius_bl,
1.0 * M_PI - a1, 1.0 * M_PI - a1 - ai );
cairo_line_to ( d, margin_left + radius_bl, widget->h - margin_bottom );
cairo_fill ( d );
}
}
if ( bottom > 0 ) {
cairo_set_line_width ( d, bottom );
distance_get_linestyle ( widget->border.bottom, d );
cairo_move_to ( d, margin_left + radius_bl, widget->h - bottom / 2.0 - margin_bottom );
cairo_line_to ( d, widget->w - margin_right - radius_br, widget->h - bottom / 2.0 - margin_bottom );
cairo_stroke ( d );
}
if ( radius_br > 0 ) {
distance_get_linestyle ( widget->border.right, d );
if ( bottom == right ) {
cairo_set_line_width ( d, right );
cairo_arc ( d, widget->w - margin_right - right / 2.0 - radius_br, widget->h - margin_bottom - radius_br - right / 2.0, radius_br, 0.0 * M_PI, 0.5 * M_PI );
cairo_stroke ( d );
}
else {
cairo_set_line_width ( d, 0 );
cairo_arc ( d, widget->w - margin_right - radius_br, widget->h - margin_bottom - radius_br, radius_br, 0.0 * M_PI, 0.5 * M_PI );
double a = ( radius_br - right );
double b = ( radius_br - bottom );
double be = acos ( ( 0.5 * sqrt ( a * a + b * b ) ) / radius_br );
double a1 = atan ( a / b ) + be - 0.5 * M_PI;
double ai = 2 * ( 0.5 * M_PI - be );
cairo_arc_negative ( d,
widget->w - margin_right - right - cos ( a1 ) * radius_br,
widget->h - margin_bottom - radius_br * ( 1 + sin ( a1 ) ), radius_br,
0.0 * M_PI + a1 + ai, 0.0 * M_PI + a1 );
cairo_line_to ( d, widget->w - margin_right, widget->h - margin_bottom - radius_br );
cairo_fill ( d );
}
}
cairo_restore ( d );
}
if ( radius_tl ) {
double a = ( radius_tl - left );
double b = ( radius_tl - top );
double be = acos ( ( 0.5 * sqrt ( a * a + b * b ) ) / radius_tl );
double a1 = atan ( a / b ) + be - 0.5 * M_PI;
double ai = 2 * ( 0.5 * M_PI - be );
cairo_arc ( d, margin_left + left + cos ( a1 ) * radius_tl,
margin_top + ( radius_tl ) + radius_tl * sin ( a1 ),
radius_tl, -M_PI + a1, -M_PI + a1 + ai);
}
cairo_line_to ( d, widget->w - margin_right - radius_tr, margin_top );
if ( radius_tr ) {
double a = ( radius_tr - right );
double b = ( radius_tr - top );
double be = acos ( ( 0.5 * sqrt ( a * a + b * b ) ) / radius_tr );
double a1 = atan ( a / b ) + be - 0.5 * M_PI;
double ai = 2 * ( 0.5 * M_PI - be );
cairo_arc ( d, widget->w - margin_right - right - cos ( a1 ) * radius_tr,
margin_top + radius_tr * ( 1 + sin ( a1 ) ), radius_tr,
-0.5*M_PI+ a1, 0.5*M_PI+a1 + ai );
}
cairo_line_to ( d, widget->w - margin_right, widget->h - margin_bottom - radius_br );
if ( radius_br ) {
double a = ( radius_br - right );
double b = ( radius_br - bottom );
double be = acos ( ( 0.5 * sqrt ( a * a + b * b ) ) / radius_br );
double a1 = atan ( a / b ) + be - 0.5 * M_PI;
double ai = 2 * ( 0.5 * M_PI - be );
cairo_arc ( d, widget->w - margin_right - right - cos ( a1 ) * radius_br,
widget->h - margin_bottom - radius_br * ( 1 + sin ( a1 ) ), radius_br,
0.0 * M_PI + a1 , 0.0 * M_PI + a1 + ai );
}
cairo_line_to ( d, margin_left + radius_bl, widget->h - margin_bottom );
if ( radius_bl ) {
double a = ( radius_bl - left );
double b = ( radius_bl - bottom );
double be = acos ( ( 0.5 * sqrt ( a * a + b * b ) ) / radius_bl );
double a1 = atan ( a / b ) + be - 0.5 * M_PI;
double ai = 2 * ( 0.5 * M_PI - be );
cairo_arc ( d, margin_left + left + cos ( a1 ) * radius_bl,
widget->h - margin_bottom - radius_bl * ( 1 + sin ( a1 ) ), radius_bl,
0.5 * M_PI + a1, 0.5 * M_PI + a1 + ai );
}
cairo_line_to ( d, margin_left, margin_top + radius_tl );
cairo_close_path ( d );
cairo_clip ( d );
widget->draw ( widget, d );
widget->need_redraw = FALSE;
cairo_restore ( d );
}
}
void widget_free ( widget *wid )
{
if ( wid ) {
if ( wid->name ) {
g_free ( wid->name );
}
if ( wid->free ) {
wid->free ( wid );
}
}
}
int widget_get_height ( widget *widget )
{
if ( widget ) {
if ( widget->get_height ) {
return widget->get_height ( widget );
}
return widget->h;
}
return 0;
}
int widget_get_width ( widget *widget )
{
if ( widget ) {
if ( widget->get_width ) {
return widget->get_width ( widget );
}
return widget->w;
}
return 0;
}
int widget_get_x_pos ( widget *widget )
{
if ( widget ) {
return widget->x;
}
return 0;
}
int widget_get_y_pos ( widget *widget )
{
if ( widget ) {
return widget->y;
}
return 0;
}
void widget_update ( widget *widget )
{
// When (desired )size of widget changes.
if ( widget ) {
if ( widget->update ) {
widget->update ( widget );
}
}
}
void widget_queue_redraw ( widget *wid )
{
if ( wid ) {
widget *iter = wid;
// Find toplevel widget.
while ( iter->parent != NULL ) {
iter->need_redraw = TRUE;
iter = iter->parent;
}
iter->need_redraw = TRUE;
}
}
gboolean widget_need_redraw ( widget *wid )
{
if ( wid && wid->enabled ) {
return wid->need_redraw;
}
return FALSE;
}
gboolean widget_clicked ( widget *wid, xcb_button_press_event_t *xbe )
{
if ( wid && wid->clicked ) {
return wid->clicked ( wid, xbe, wid->clicked_cb_data );
}
return FALSE;
}
void widget_set_clicked_handler ( widget *wid, widget_clicked_cb cb, void *udata )
{
if ( wid ) {
wid->clicked = cb;
wid->clicked_cb_data = udata;
}
}
gboolean widget_motion_notify ( widget *wid, xcb_motion_notify_event_t *xme )
{
if ( wid && wid->motion_notify ) {
wid->motion_notify ( wid, xme );
}
return FALSE;
}
int widget_padding_get_left ( const widget *wid )
{
int distance = distance_get_pixel ( wid->padding.left, ORIENTATION_HORIZONTAL );
distance += distance_get_pixel ( wid->border.left, ORIENTATION_HORIZONTAL );
distance += distance_get_pixel ( wid->margin.left, ORIENTATION_HORIZONTAL );
return distance;
}
int widget_padding_get_right ( const widget *wid )
{
int distance = distance_get_pixel ( wid->padding.right, ORIENTATION_HORIZONTAL );
distance += distance_get_pixel ( wid->border.right, ORIENTATION_HORIZONTAL );
distance += distance_get_pixel ( wid->margin.right, ORIENTATION_HORIZONTAL );
return distance;
}
int widget_padding_get_top ( const widget *wid )
{
int distance = distance_get_pixel ( wid->padding.top, ORIENTATION_VERTICAL );
distance += distance_get_pixel ( wid->border.top, ORIENTATION_VERTICAL );
distance += distance_get_pixel ( wid->margin.top, ORIENTATION_VERTICAL );
return distance;
}
int widget_padding_get_bottom ( const widget *wid )
{
int distance = distance_get_pixel ( wid->padding.bottom, ORIENTATION_VERTICAL );
distance += distance_get_pixel ( wid->border.bottom, ORIENTATION_VERTICAL );
distance += distance_get_pixel ( wid->margin.bottom, ORIENTATION_VERTICAL );
return distance;
}
int widget_padding_get_remaining_width ( const widget *wid )
{
int width = wid->w;
width -= widget_padding_get_left ( wid );
width -= widget_padding_get_right ( wid );
return width;
}
int widget_padding_get_remaining_height ( const widget *wid )
{
int height = wid->h;
height -= widget_padding_get_top ( wid );
height -= widget_padding_get_bottom ( wid );
return height;
}
int widget_padding_get_padding_height ( const widget *wid )
{
int height = 0;
height += widget_padding_get_top ( wid );
height += widget_padding_get_bottom ( wid );
return height;
}
int widget_padding_get_padding_width ( const widget *wid )
{
int width = 0;
width += widget_padding_get_left ( wid );
width += widget_padding_get_right ( wid );
return width;
}
int widget_get_desired_height ( widget *wid )
{
if ( wid && wid->get_desired_height ) {
return wid->get_desired_height ( wid );
}
return 0;
}
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