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rofi/source/widgets/widget.c
Dave Davenport dac09b8728 Cleanups based on cppcheck.
2021-12-01 13:14:36 +01:00

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/*
* rofi
*
* MIT/X11 License
* Copyright © 2013-2021 Qball Cow <qball@gmpclient.org>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include "widgets/widget.h"
#include "theme.h"
#include "widgets/widget-internal.h"
#include <glib.h>
#include <math.h>
/** Default padding. */
#define WIDGET_DEFAULT_PADDING 0
/** macro for initializing the padding struction. */
#define WIDGET_PADDING_INIT \
{ \
{WIDGET_DEFAULT_PADDING, ROFI_PU_PX, ROFI_DISTANCE_MODIFIER_NONE, NULL, \
NULL}, \
ROFI_HL_SOLID \
}
void widget_init(widget *wid, widget *parent, WidgetType type,
const char *name) {
wid->type = type;
wid->parent = parent;
wid->name = g_strdup(name);
wid->def_padding = (RofiPadding){WIDGET_PADDING_INIT, WIDGET_PADDING_INIT,
WIDGET_PADDING_INIT, WIDGET_PADDING_INIT};
wid->def_border = (RofiPadding){WIDGET_PADDING_INIT, WIDGET_PADDING_INIT,
WIDGET_PADDING_INIT, WIDGET_PADDING_INIT};
wid->def_border_radius =
(RofiPadding){WIDGET_PADDING_INIT, WIDGET_PADDING_INIT,
WIDGET_PADDING_INIT, WIDGET_PADDING_INIT};
wid->def_margin = (RofiPadding){WIDGET_PADDING_INIT, WIDGET_PADDING_INIT,
WIDGET_PADDING_INIT, WIDGET_PADDING_INIT};
wid->padding = rofi_theme_get_padding(wid, "padding", wid->def_padding);
wid->border = rofi_theme_get_padding(wid, "border", wid->def_border);
wid->border_radius =
rofi_theme_get_padding(wid, "border-radius", wid->def_border_radius);
wid->margin = rofi_theme_get_padding(wid, "margin", wid->def_margin);
wid->cursor_type =
rofi_theme_get_cursor_type(wid, "cursor", ROFI_CURSOR_DEFAULT);
// enabled by default
wid->enabled = rofi_theme_get_boolean(wid, "enabled", TRUE);
}
void widget_set_state(widget *widget, const char *state) {
if (widget == NULL) {
return;
}
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);
if (widget->set_state != NULL) {
widget->set_state(widget, state);
}
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) && y >= (widget->y) &&
y < (widget->y + widget->h)) {
return TRUE;
}
return FALSE;
}
void widget_resize(widget *widget, short w, short h) {
if (widget == NULL) {
return;
}
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 update.
widget_queue_redraw(widget);
}
void widget_move(widget *widget, short x, short y) {
if (widget == NULL) {
return;
}
widget->x = x;
widget->y = y;
}
void widget_set_type(widget *widget, WidgetType type) {
if (widget == NULL) {
return;
}
widget->type = type;
}
gboolean widget_enabled(widget *widget) {
if (widget == NULL) {
return FALSE;
}
return widget->enabled;
}
void widget_set_enabled(widget *widget, gboolean enabled) {
if (widget == NULL) {
return;
}
if (widget->enabled != enabled) {
widget->enabled = enabled;
widget_update(widget);
widget_update(widget->parent);
widget_queue_redraw(widget);
}
}
void widget_draw(widget *widget, cairo_t *d) {
if (widget == NULL) {
return;
}
// Check if enabled and if draw is implemented.
if (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);
const int margin_left =
distance_get_pixel(widget->margin.left, ROFI_ORIENTATION_HORIZONTAL);
const int margin_top =
distance_get_pixel(widget->margin.top, ROFI_ORIENTATION_VERTICAL);
const int margin_right =
distance_get_pixel(widget->margin.right, ROFI_ORIENTATION_HORIZONTAL);
const int margin_bottom =
distance_get_pixel(widget->margin.bottom, ROFI_ORIENTATION_VERTICAL);
const int left =
distance_get_pixel(widget->border.left, ROFI_ORIENTATION_HORIZONTAL);
const int right =
distance_get_pixel(widget->border.right, ROFI_ORIENTATION_HORIZONTAL);
const int top =
distance_get_pixel(widget->border.top, ROFI_ORIENTATION_VERTICAL);
const int bottom =
distance_get_pixel(widget->border.bottom, ROFI_ORIENTATION_VERTICAL);
int radius_bl = distance_get_pixel(widget->border_radius.left,
ROFI_ORIENTATION_HORIZONTAL);
int radius_tr = distance_get_pixel(widget->border_radius.right,
ROFI_ORIENTATION_HORIZONTAL);
int radius_tl = distance_get_pixel(widget->border_radius.top,
ROFI_ORIENTATION_VERTICAL);
int radius_br = distance_get_pixel(widget->border_radius.bottom,
ROFI_ORIENTATION_VERTICAL);
double vspace =
widget->h - margin_top - margin_bottom - top / 2.0 - bottom / 2.0;
double hspace =
widget->w - margin_left - margin_right - left / 2.0 - right / 2.0;
if ((radius_bl + radius_tl) > (vspace)) {
int j = ((vspace) / 2.0);
radius_bl = MIN(radius_bl, j);
radius_tl = MIN(radius_tl, j);
}
if ((radius_br + radius_tr) > (vspace)) {
int j = ((vspace) / 2.0);
radius_br = MIN(radius_br, j);
radius_tr = MIN(radius_tr, j);
}
if ((radius_tl + radius_tr) > (hspace)) {
int j = ((hspace) / 2.0);
radius_tr = MIN(radius_tr, j);
radius_tl = MIN(radius_tl, j);
}
if ((radius_bl + radius_br) > (hspace)) {
int j = ((hspace) / 2.0);
radius_br = MIN(radius_br, j);
radius_bl = MIN(radius_bl, j);
}
// Background painting.
// Set new x/y position.
cairo_translate(d, widget->x, widget->y);
cairo_set_line_width(d, 0);
// Outer outline outlines
double x1, y1, x2, y2;
x1 = margin_left + left / 2.0, y1 = margin_top + top / 2.0,
x2 = widget->w - margin_right - right / 2.0,
y2 = widget->h - margin_bottom - bottom / 2.0;
if (radius_tl > 0) {
cairo_move_to(d, x1, y1 + radius_tl);
cairo_arc(d, x1 + radius_tl, y1 + radius_tl, radius_tl, -1.0 * G_PI,
-G_PI_2);
} else {
cairo_move_to(d, x1, y1);
}
if (radius_tr > 0) {
cairo_line_to(d, x2 - radius_tr, y1);
cairo_arc(d, x2 - radius_tr, y1 + radius_tr, radius_tr, -G_PI_2,
0 * G_PI);
} else {
cairo_line_to(d, x2, y1);
}
if (radius_br > 0) {
cairo_line_to(d, x2, y2 - radius_br);
cairo_arc(d, x2 - radius_br, y2 - radius_br, radius_br, 0.0 * G_PI,
G_PI_2);
} else {
cairo_line_to(d, x2, y2);
}
if (radius_bl > 0) {
cairo_line_to(d, x1 + radius_bl, y2);
cairo_arc(d, x1 + radius_bl, y2 - radius_bl, radius_bl, G_PI_2,
1.0 * G_PI);
} else {
cairo_line_to(d, x1, y2);
}
cairo_close_path(d);
cairo_set_source_rgba(d, 1.0, 1.0, 1.0, 1.0);
rofi_theme_get_color(widget, "background-color", d);
cairo_fill_preserve(d);
if (rofi_theme_get_image(widget, "background-image", d)) {
cairo_fill_preserve(d);
}
cairo_clip(d);
widget->draw(widget, d);
widget->need_redraw = FALSE;
cairo_restore(d);
if (left != 0 || top != 0 || right != 0 || bottom != 0) {
cairo_save(d);
cairo_translate(d, widget->x, widget->y);
cairo_new_path(d);
rofi_theme_get_color(widget, "border-color", d);
// Calculate the different offsets for the corners.
double minof_tr = MIN(right / 2.0, top / 2.0);
double minof_tl = MIN(left / 2.0, top / 2.0);
double minof_br = MIN(right / 2.0, bottom / 2.0);
double minof_bl = MIN(left / 2.0, bottom / 2.0);
// Inner radius
double radius_inner_tl = radius_tl - minof_tl;
double radius_inner_tr = radius_tr - minof_tr;
double radius_inner_bl = radius_bl - minof_bl;
double radius_inner_br = radius_br - minof_br;
// Offsets of the different lines in each corner.
//
// | |
// ttl ttr
// | |
// -ltl-###############-rtr-
// $ $
// $ $
// -lbl-###############-rbr-
// | |
// bbl bbr
// | |
//
// The left and right part ($) start at thinkness top bottom when no
// radius
double offset_ltl =
(radius_inner_tl > 0) ? (left) + radius_inner_tl : left;
double offset_rtr =
(radius_inner_tr > 0) ? (right) + radius_inner_tr : right;
double offset_lbl =
(radius_inner_bl > 0) ? (left) + radius_inner_bl : left;
double offset_rbr =
(radius_inner_br > 0) ? (right) + radius_inner_br : right;
// The top and bottom part (#) go into the corner when no radius
double offset_ttl = (radius_inner_tl > 0) ? (top) + radius_inner_tl
: (radius_tl > 0) ? top
: 0;
double offset_ttr = (radius_inner_tr > 0) ? (top) + radius_inner_tr
: (radius_tr > 0) ? top
: 0;
double offset_bbl = (radius_inner_bl > 0) ? (bottom) + radius_inner_bl
: (radius_bl > 0) ? bottom
: 0;
double offset_bbr = (radius_inner_br > 0) ? (bottom) + radius_inner_br
: (radius_br > 0) ? bottom
: 0;
if (left > 0) {
cairo_set_line_width(d, left);
distance_get_linestyle(widget->border.left, d);
cairo_move_to(d, x1, margin_top + offset_ttl);
cairo_line_to(d, x1, widget->h - margin_bottom - offset_bbl);
cairo_stroke(d);
}
if (right > 0) {
cairo_set_line_width(d, right);
distance_get_linestyle(widget->border.right, d);
cairo_move_to(d, x2, margin_top + offset_ttr);
cairo_line_to(d, x2, widget->h - margin_bottom - offset_bbr);
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 + offset_ltl, y1);
cairo_line_to(d, widget->w - margin_right - offset_rtr, y1);
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 + offset_lbl, y2);
cairo_line_to(d, widget->w - margin_right - offset_rbr, y2);
cairo_stroke(d);
}
if (radius_tl > 0) {
distance_get_linestyle(widget->border.left, d);
cairo_set_line_width(d, 0);
double radius_outer = radius_tl + minof_tl;
cairo_arc(d, margin_left + radius_outer, margin_top + radius_outer,
radius_outer, -G_PI, -G_PI_2);
cairo_line_to(d, margin_left + offset_ltl, margin_top);
cairo_line_to(d, margin_left + offset_ltl, margin_top + top);
if (radius_inner_tl > 0) {
cairo_arc_negative(d, margin_left + left + radius_inner_tl,
margin_top + top + radius_inner_tl,
radius_inner_tl, -G_PI_2, G_PI);
cairo_line_to(d, margin_left + left, margin_top + offset_ttl);
}
cairo_line_to(d, margin_left, margin_top + offset_ttl);
cairo_close_path(d);
cairo_fill(d);
}
if (radius_tr > 0) {
distance_get_linestyle(widget->border.right, d);
cairo_set_line_width(d, 0);
double radius_outer = radius_tr + minof_tr;
cairo_arc(d, widget->w - margin_right - radius_outer,
margin_top + radius_outer, radius_outer, -G_PI_2, 0);
cairo_line_to(d, widget->w - margin_right, margin_top + offset_ttr);
cairo_line_to(d, widget->w - margin_right - right,
margin_top + offset_ttr);
if (radius_inner_tr > 0) {
cairo_arc_negative(
d, widget->w - margin_right - right - radius_inner_tr,
margin_top + top + radius_inner_tr, radius_inner_tr, 0, -G_PI_2);
cairo_line_to(d, widget->w - margin_right - offset_rtr,
margin_top + top);
}
cairo_line_to(d, widget->w - margin_right - offset_rtr, margin_top);
cairo_close_path(d);
cairo_fill(d);
}
if (radius_br > 0) {
distance_get_linestyle(widget->border.right, d);
cairo_set_line_width(d, 1);
double radius_outer = radius_br + minof_br;
cairo_arc(d, widget->w - margin_right - radius_outer,
widget->h - margin_bottom - radius_outer, radius_outer, 0.0,
G_PI_2);
cairo_line_to(d, widget->w - margin_right - offset_rbr,
widget->h - margin_bottom);
cairo_line_to(d, widget->w - margin_right - offset_rbr,
widget->h - margin_bottom - bottom);
if (radius_inner_br > 0) {
cairo_arc_negative(
d, widget->w - margin_right - right - radius_inner_br,
widget->h - margin_bottom - bottom - radius_inner_br,
radius_inner_br, G_PI_2, 0.0);
cairo_line_to(d, widget->w - margin_right - right,
widget->h - margin_bottom - offset_bbr);
}
cairo_line_to(d, widget->w - margin_right,
widget->h - margin_bottom - offset_bbr);
cairo_close_path(d);
cairo_fill(d);
}
if (radius_bl > 0) {
distance_get_linestyle(widget->border.left, d);
cairo_set_line_width(d, 1.0);
double radius_outer = radius_bl + minof_bl;
cairo_arc(d, margin_left + radius_outer,
widget->h - margin_bottom - radius_outer, radius_outer,
G_PI_2, G_PI);
cairo_line_to(d, margin_left, widget->h - margin_bottom - offset_bbl);
cairo_line_to(d, margin_left + left,
widget->h - margin_bottom - offset_bbl);
if (radius_inner_bl > 0) {
cairo_arc_negative(d, margin_left + left + radius_inner_bl,
widget->h - margin_bottom - bottom -
radius_inner_bl,
radius_inner_bl, G_PI, G_PI_2);
cairo_line_to(d, margin_left + offset_lbl,
widget->h - margin_bottom - bottom);
}
cairo_line_to(d, margin_left + offset_lbl, widget->h - margin_bottom);
cairo_close_path(d);
cairo_fill(d);
}
cairo_restore(d);
}
}
}
void widget_free(widget *wid) {
if (wid == NULL) {
return;
}
if (wid->name != NULL) {
g_free(wid->name);
}
if (wid->free != NULL) {
wid->free(wid);
}
}
int widget_get_height(widget *widget) {
if (widget == NULL) {
return 0;
}
if (widget->get_height == NULL) {
return widget->h;
}
return widget->get_height(widget);
}
int widget_get_width(widget *widget) {
if (widget == NULL) {
return 0;
}
if (widget->get_width == NULL) {
return widget->w;
}
return widget->get_width(widget);
}
int widget_get_x_pos(widget *widget) {
if (widget == NULL) {
return 0;
}
return widget->x;
}
int widget_get_y_pos(widget *widget) {
if (widget == NULL) {
return 0;
}
return widget->y;
}
void widget_xy_to_relative(widget *widget, gint *x, gint *y) {
*x -= widget->x;
*y -= widget->y;
if (widget->parent == NULL) {
return;
}
widget_xy_to_relative(widget->parent, x, y);
}
void widget_update(widget *widget) {
if (widget == NULL) {
return;
}
// When (desired )size of widget changes.
if (widget->update != NULL) {
widget->update(widget);
}
}
void widget_queue_redraw(widget *wid) {
if (wid == NULL) {
return;
}
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 == NULL) {
return FALSE;
}
if (!wid->enabled) {
return FALSE;
}
return wid->need_redraw;
}
widget *widget_find_mouse_target(widget *wid, WidgetType type, gint x, gint y) {
if (wid == NULL) {
return NULL;
}
if (wid->find_mouse_target != NULL) {
widget *target = wid->find_mouse_target(wid, type, x, y);
if (target != NULL) {
return target;
}
}
if (wid->type == type || type == WIDGET_TYPE_UNKNOWN) {
return wid;
}
return NULL;
}
WidgetTriggerActionResult widget_check_action(widget *wid, guint action, gint x,
gint y) {
if (wid == NULL) {
return FALSE;
}
if (wid->trigger_action == NULL) {
return FALSE;
}
/*
* TODO: We should probably add a check_action callback to the widgets
* to do extra checks
*/
return WIDGET_TRIGGER_ACTION_RESULT_HANDLED;
}
WidgetTriggerActionResult widget_trigger_action(widget *wid, guint action,
gint x, gint y) {
if (wid == NULL) {
return FALSE;
}
if (wid->trigger_action == NULL) {
return FALSE;
}
return wid->trigger_action(wid, action, x, y, wid->trigger_action_cb_data);
}
void widget_set_trigger_action_handler(widget *wid, widget_trigger_action_cb cb,
void *cb_data) {
if (wid == NULL) {
return;
}
wid->trigger_action = cb;
wid->trigger_action_cb_data = cb_data;
}
gboolean widget_motion_notify(widget *wid, gint x, gint y) {
if (wid == NULL) {
return FALSE;
}
if (wid->motion_notify == NULL) {
return FALSE;
}
return wid->motion_notify(wid, x, y);
}
int widget_padding_get_left(const widget *wid) {
if (wid == NULL) {
return 0;
}
int distance =
distance_get_pixel(wid->padding.left, ROFI_ORIENTATION_HORIZONTAL);
distance += distance_get_pixel(wid->border.left, ROFI_ORIENTATION_HORIZONTAL);
distance += distance_get_pixel(wid->margin.left, ROFI_ORIENTATION_HORIZONTAL);
return distance;
}
int widget_padding_get_right(const widget *wid) {
if (wid == NULL) {
return 0;
}
int distance =
distance_get_pixel(wid->padding.right, ROFI_ORIENTATION_HORIZONTAL);
distance +=
distance_get_pixel(wid->border.right, ROFI_ORIENTATION_HORIZONTAL);
distance +=
distance_get_pixel(wid->margin.right, ROFI_ORIENTATION_HORIZONTAL);
return distance;
}
int widget_padding_get_top(const widget *wid) {
if (wid == NULL) {
return 0;
}
int distance =
distance_get_pixel(wid->padding.top, ROFI_ORIENTATION_VERTICAL);
distance += distance_get_pixel(wid->border.top, ROFI_ORIENTATION_VERTICAL);
distance += distance_get_pixel(wid->margin.top, ROFI_ORIENTATION_VERTICAL);
return distance;
}
int widget_padding_get_bottom(const widget *wid) {
if (wid == NULL) {
return 0;
}
int distance =
distance_get_pixel(wid->padding.bottom, ROFI_ORIENTATION_VERTICAL);
distance += distance_get_pixel(wid->border.bottom, ROFI_ORIENTATION_VERTICAL);
distance += distance_get_pixel(wid->margin.bottom, ROFI_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, const int width) {
if (wid == NULL) {
return 0;
}
if (wid->get_desired_height == NULL) {
return wid->h;
}
return wid->get_desired_height(wid, width);
}
int widget_get_desired_width(widget *wid, const int height) {
if (wid == NULL) {
return 0;
}
if (wid->get_desired_width == NULL) {
return wid->w;
}
return wid->get_desired_width(wid, height);
}
int widget_get_absolute_xpos(widget *wid) {
if (wid == NULL) {
return 0;
}
int retv = wid->x;
if (wid->parent != NULL) {
retv += widget_get_absolute_xpos(wid->parent);
}
return retv;
}
int widget_get_absolute_ypos(widget *wid) {
if (wid == NULL) {
return 0;
}
int retv = wid->y;
if (wid->parent != NULL) {
retv += widget_get_absolute_ypos(wid->parent);
}
return retv;
}
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