/**************************************************************************
*
* Tint2 : area
-*
+*
* Copyright (C) 2008 thierry lorthiois (lorthiois@bbsoft.fr)
-*
+*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
+#include <X11/extensions/Xrender.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <glib.h>
+#include <pango/pangocairo.h>
-#include "window.h"
-#include "server.h"
#include "area.h"
+#include "server.h"
+#include "panel.h"
+
+
+/************************************************************
+ * !!! This design is experimental and not yet fully implemented !!!!!!!!!!!!!
+ *
+ * DATA ORGANISATION :
+ * Areas in tint2 are similar to widgets in a GUI.
+ * All graphical objects (panel, taskbar, task, systray, clock, ...) 'inherit' an abstract class 'Area'.
+ * This class 'Area' manage the background, border, size, position and padding.
+ * Area is at the begining of each object (&object == &area).
+ *
+ * tint2 define one panel per monitor. And each panel have a tree of Area.
+ * The root of the tree is Panel.Area. And task, clock, systray, taskbar,... are nodes.
+ *
+ * The tree give the localisation of each object :
+ * - tree's root is in the background while tree's leafe are foreground objects
+ * - position of a node/Area depend on the layout : parent's position (posx, posy), size of previous brothers and parent's padding
+ * - size of a node/Area depend on the content (SIZE_BY_CONTENT objects) or on the layout (SIZE_BY_LAYOUT objects)
+ *
+ * DRAWING AND LAYERING ENGINE :
+ * Redrawing an object (like the clock) could come from an 'external event' (date change)
+ * or from a 'layering event' (position change).
+ * The following 'drawing engine' take care of :
+ * - posx/posy of all Area
+ * - 'layering event' propagation between object
+ * 1) browse tree SIZE_BY_CONTENT
+ * - resize SIZE_BY_CONTENT node : children are resized before parent
+ * - if 'size' changed then 'resize = 1' on the parent
+ * 2) browse tree SIZE_BY_LAYOUT and POSITION
+ * - resize SIZE_BY_LAYOUT node : parent is resized before children
+ * - if 'size' changed then 'resize = 1' on childs with SIZE_BY_LAYOUT
+ * - calculate position (posx,posy) : parent is calculated before children
+ * - if 'position' changed then 'redraw = 1'
+ * 3) browse tree REDRAW
+ * - redraw needed objects : parent is drawn before children
+ *
+ * CONFIGURE PANEL'S LAYOUT :
+ * 'panel_items' parameter (in config) define the list and the order of nodes in tree's panel.
+ * 'panel_items = SC' define a panel with just Systray and Clock.
+ * So the tree 'Panel.Area' will have 2 childs (Systray and Clock).
+ *
+ ************************************************************/
+
+void init_rendering(void *obj, int pos)
+{
+ Area *a = (Area*)obj;
+
+ // initialize fixed position/size
+ GSList *l;
+ for (l = a->list; l ; l = l->next) {
+ Area *child = ((Area*)l->data);
+ if (panel_horizontal) {
+ child->posy = pos + a->bg->border.width + a->paddingy;
+ child->height = a->height - (2 * (a->bg->border.width + a->paddingy));
+ init_rendering(child, child->posy);
+ }
+ else {
+ child->posx = pos + a->bg->border.width + a->paddingy;
+ child->width = a->width - (2 * (a->bg->border.width + a->paddingy));
+ init_rendering(child, child->posx);
+ }
+ }
+}
+
+
+void rendering(void *obj)
+{
+ Panel *panel = (Panel*)obj;
+
+ size_by_content(&panel->area);
+ size_by_layout(&panel->area, 0, 0);
+
+ refresh(&panel->area);
+}
+
+
+void size_by_content (Area *a)
+{
+ // don't resize hiden objects
+ if (!a->on_screen) return;
+
+ // children node are resized before its parent
+ GSList *l;
+ for (l = a->list; l ; l = l->next)
+ size_by_content(l->data);
+
+ // calculate area's size
+ if (a->resize && a->size_mode == SIZE_BY_CONTENT) {
+ a->resize = 0;
+
+ if (a->_resize) {
+ if (a->_resize(a)) {
+ // 'size' changed => 'resize = 1' on the parent and redraw object
+ ((Area*)a->parent)->resize = 1;
+ }
+ a->redraw = 1;
+ }
+ }
+}
-void redraw (Area *a)
+void size_by_layout (Area *a, int pos, int level)
{
- a->redraw = 1;
-
- GSList *l;
- for (l = a->list ; l ; l = l->next)
- redraw(l->data);
+ // don't resize hiden objects
+ if (!a->on_screen) return;
+
+ // parent node is resized before its children
+ // calculate area's size
+ GSList *l;
+ if (a->resize && a->size_mode == SIZE_BY_LAYOUT) {
+ a->resize = 0;
+
+ if (a->_resize) {
+ if (a->_resize(a)) {
+ // if 'size' changed then 'resize = 1' on childs with SIZE_BY_LAYOUT
+ for (l = a->list; l ; l = l->next) {
+ if (((Area*)l->data)->size_mode == SIZE_BY_LAYOUT)
+ ((Area*)l->data)->resize = 1;
+ }
+ }
+ }
+ }
+
+ // update position of childs
+ pos += a->paddingxlr + a->bg->border.width;
+ int i=0;
+ for (l = a->list; l ; l = l->next) {
+ Area *child = ((Area*)l->data);
+ if (!child->on_screen) continue;
+ i++;
+
+ if (panel_horizontal) {
+ if (pos != child->posx) {
+ // pos changed => redraw
+ child->posx = pos;
+ child->redraw = 1;
+ }
+ }
+ else {
+ if (pos != child->posy) {
+ // pos changed => redraw
+ child->posy = pos;
+ child->redraw = 1;
+ }
+ }
+ //printf("level %d, object %d, pos %d\n", level, i, pos);
+
+ size_by_layout(child, pos, level+1);
+
+ if (panel_horizontal)
+ pos += child->width + a->paddingx;
+ else
+ pos += child->height + a->paddingx;
+ }
}
-int draw (Area *a)
+void refresh (Area *a)
{
- cairo_surface_t *cs;
- cairo_t *c;
- int ret = 0;
+ // don't draw and resize hide objects
+ if (!a->on_screen) return;
- if (a->redraw) {
- //printf("begin draw area\n");
- if (a->pmap) XFreePixmap (server.dsp, a->pmap);
- a->pmap = server_create_pixmap (a->width, a->height);
+ // don't draw transparent objects (without foreground and without background)
+ if (a->redraw) {
+ a->redraw = 0;
+ // force redraw of child
+ GSList *l;
+ for (l = a->list ; l ; l = l->next)
+ ((Area*)l->data)->redraw = 1;
+// set_redraw(l->data);
- // add layer of root pixmap
- XCopyArea (server.dsp, server.pmap, a->pmap, server.gc, a->posx, a->posy, a->width, a->height, 0, 0);
+ //printf("draw area posx %d, width %d\n", a->posx, a->width);
+ draw(a);
+ }
- cs = cairo_xlib_surface_create (server.dsp, a->pmap, server.visual, a->width, a->height);
- c = cairo_create (cs);
+ // draw current Area
+ if (a->pix == 0) printf("empty area posx %d, width %d\n", a->posx, a->width);
+ XCopyArea (server.dsp, a->pix, ((Panel *)a->panel)->temp_pmap, server.gc, 0, 0, a->width, a->height, a->posx, a->posy);
- draw_background (a, c);
-
- if (a->draw_foreground)
- ret = a->draw_foreground(a, c);
+ // and then refresh child object
+ GSList *l;
+ for (l = a->list; l ; l = l->next)
+ refresh(l->data);
+}
+
+
+int resize_by_layout(void *obj)
+{
+ Area *child, *a = (Area*)obj;
+ int size, nb_by_content=0, nb_by_layout=0;
- cairo_destroy (c);
- cairo_surface_destroy (cs);
- a->redraw = 0;
- }
-
- XCopyArea (server.dsp, a->pmap, server.pmap, server.gc, 0, 0, a->width, a->height, a->posx, a->posy);
-
- GSList *l = a->list;
- // draw child object
- for (; l ; l = l->next)
- draw(l->data);
+ if (panel_horizontal) {
+ // detect free size for SIZE_BY_LAYOUT's Area
+ size = a->width - (2 * (a->paddingxlr + a->bg->border.width));
+ GSList *l;
+ for (l = a->list ; l ; l = l->next) {
+ child = (Area*)l->data;
+ if (child->on_screen && child->size_mode == SIZE_BY_CONTENT) {
+ size -= child->width;
+ nb_by_content++;
+ }
+ if (child->on_screen && child->size_mode == SIZE_BY_LAYOUT)
+ nb_by_layout++;
+ }
+ if (nb_by_content+nb_by_layout)
+ size -= ((nb_by_content+nb_by_layout-1) * a->paddingx);
+ //printf("resize_panel : size_panel %d, size_layout %d\n", panel->area.width, size);
- //printf("end draw area\n");
- return ret;
+ int width=0, modulo=0;
+ if (nb_by_layout) {
+ width = size / nb_by_layout;
+ modulo = size % nb_by_layout;
+ }
+
+ // resize SIZE_BY_LAYOUT objects
+ for (l = a->list ; l ; l = l->next) {
+ child = (Area*)l->data;
+ if (child->on_screen && child->size_mode == SIZE_BY_LAYOUT) {
+ child->width = width;
+ child->resize = 1;
+ if (modulo) {
+ child->width++;
+ modulo--;
+ }
+ }
+ }
+ }
+ else {
+ // detect free size for SIZE_BY_LAYOUT's Area
+ size = a->height - (2 * (a->paddingxlr + a->bg->border.width));
+ GSList *l;
+ for (l = a->list ; l ; l = l->next) {
+ child = (Area*)l->data;
+ if (child->on_screen && child->size_mode == SIZE_BY_CONTENT) {
+ size -= child->height;
+ nb_by_content++;
+ }
+ if (child->on_screen && child->size_mode == SIZE_BY_LAYOUT)
+ nb_by_layout++;
+ }
+ if (nb_by_content+nb_by_layout)
+ size -= ((nb_by_content+nb_by_layout-1) * a->paddingx);
+
+ int height=0, modulo=0;
+ if (nb_by_layout) {
+ height = size / nb_by_layout;
+ modulo = size % nb_by_layout;
+ }
+
+ // resize SIZE_BY_LAYOUT objects
+ for (l = a->list ; l ; l = l->next) {
+ child = (Area*)l->data;
+ if (child->on_screen && child->size_mode == SIZE_BY_LAYOUT) {
+ child->height = height;
+ child->resize = 1;
+ if (modulo) {
+ child->height++;
+ modulo--;
+ }
+ }
+ }
+ }
+ return 0;
+}
+
+
+void set_redraw (Area *a)
+{
+ a->redraw = 1;
+
+ GSList *l;
+ for (l = a->list ; l ; l = l->next)
+ set_redraw(l->data);
+}
+
+void hide(Area *a)
+{
+ Area *parent = (Area*)a->parent;
+
+ a->on_screen = 0;
+ parent->resize = 1;
+ if (panel_horizontal)
+ a->width = 0;
+ else
+ a->height = 0;
+}
+
+void show(Area *a)
+{
+ Area *parent = (Area*)a->parent;
+
+ a->on_screen = 1;
+ parent->resize = 1;
+ a->resize = 1;
+}
+
+void draw (Area *a)
+{
+ if (a->pix) XFreePixmap (server.dsp, a->pix);
+ a->pix = XCreatePixmap (server.dsp, server.root_win, a->width, a->height, server.depth);
+
+ // add layer of root pixmap (or clear pixmap if real_transparency==true)
+ if (server.real_transparency)
+ clear_pixmap(a->pix, 0 ,0, a->width, a->height);
+ XCopyArea (server.dsp, ((Panel *)a->panel)->temp_pmap, a->pix, server.gc, a->posx, a->posy, a->width, a->height, 0, 0);
+
+ cairo_surface_t *cs;
+ cairo_t *c;
+
+ cs = cairo_xlib_surface_create (server.dsp, a->pix, server.visual, a->width, a->height);
+ c = cairo_create (cs);
+
+ draw_background (a, c);
+
+ if (a->_draw_foreground)
+ a->_draw_foreground(a, c);
+
+ cairo_destroy (c);
+ cairo_surface_destroy (cs);
}
void draw_background (Area *a, cairo_t *c)
{
- if (a->back.alpha > 0.0) {
- //printf(" draw_background %d %d\n", a->width, a->height);
- draw_rect(c, a->border.width, a->border.width, a->width-(2.0 * a->border.width), a->height-(2.0*a->border.width), a->border.rounded - a->border.width/1.571);
- /*
- double x0, y0, x1, y1;
- x0 = 0;
- y0 = 100;
- x1 = 100;
- y1 = 0;
-
- cairo_pattern_t *linpat;
- cairo_matrix_t matrix;
- linpat = cairo_pattern_create_linear (x0, y0, x1, y1);
-
- cairo_pattern_add_color_stop_rgba (linpat, 0, a->back.color[0], a->back.color[1], a->back.color[2], a->back.alpha);
- cairo_pattern_add_color_stop_rgba (linpat, 1, a->back.color[0], a->back.color[1], a->back.color[2], 0);
- //cairo_matrix_init_scale (&matrix, a->height, a->width);
- //cairo_pattern_set_matrix (linpat, &matrix);
- cairo_set_source (c, linpat);
- */
- cairo_set_source_rgba(c, a->back.color[0], a->back.color[1], a->back.color[2], a->back.alpha);
-
- cairo_fill(c);
- //cairo_pattern_destroy (linpat);
- }
-
- if (a->border.width > 0 && a->border.alpha > 0.0) {
- cairo_set_line_width (c, a->border.width);
-
- // draw border inside (x, y, width, height)
- draw_rect(c, a->border.width/2.0, a->border.width/2.0, a->width - a->border.width, a->height - a->border.width, a->border.rounded);
- /*
- // convert : radian = degre * M_PI/180
- // définir le dégradé dans un carré de (0,0) (100,100)
- // ensuite ce dégradé est extrapolé selon le ratio width/height
- // dans repère (0, 0) (100, 100)
- double X0, Y0, X1, Y1, degre;
- // x = X * (a->width / 100), y = Y * (a->height / 100)
- double x0, y0, x1, y1;
- X0 = 0;
- Y0 = 100;
- X1 = 100;
- Y1 = 0;
- degre = 45;
- // et ensuite faire la changement d'unité du repère
- // car ce qui doit resté inchangée est les traits et pas la direction
-
- // il faut d'abord appliquer une rotation de 90° (et -180° si l'angle est supérieur à 180°)
- // ceci peut être appliqué une fois pour toute au départ
- // ensuite calculer l'angle dans le nouveau repère
- // puis faire une rotation de 90°
- x0 = X0 * ((double)a->width / 100);
- x1 = X1 * ((double)a->width / 100);
- y0 = Y0 * ((double)a->height / 100);
- y1 = Y1 * ((double)a->height / 100);
-
- x0 = X0 * ((double)a->height / 100);
- x1 = X1 * ((double)a->height / 100);
- y0 = Y0 * ((double)a->width / 100);
- y1 = Y1 * ((double)a->width / 100);
- printf("repère (%d, %d) points (%lf, %lf) (%lf, %lf)\n", a->width, a->height, x0, y0, x1, y1);
-
- cairo_pattern_t *linpat;
- linpat = cairo_pattern_create_linear (x0, y0, x1, y1);
- cairo_pattern_add_color_stop_rgba (linpat, 0, a->border.color[0], a->border.color[1], a->border.color[2], a->border.alpha);
- cairo_pattern_add_color_stop_rgba (linpat, 1, a->border.color[0], a->border.color[1], a->border.color[2], 0);
- cairo_set_source (c, linpat);
- */
- cairo_set_source_rgba (c, a->border.color[0], a->border.color[1], a->border.color[2], a->border.alpha);
-
- cairo_stroke (c);
- //cairo_pattern_destroy (linpat);
- }
+ if (a->bg->back.alpha > 0.0) {
+ //printf(" draw_background (%d %d) RGBA (%lf, %lf, %lf, %lf)\n", a->posx, a->posy, pix->back.color[0], pix->back.color[1], pix->back.color[2], pix->back.alpha);
+ draw_rect(c, a->bg->border.width, a->bg->border.width, a->width-(2.0 * a->bg->border.width), a->height-(2.0*a->bg->border.width), a->bg->border.rounded - a->bg->border.width/1.571);
+ cairo_set_source_rgba(c, a->bg->back.color[0], a->bg->back.color[1], a->bg->back.color[2], a->bg->back.alpha);
+ cairo_fill(c);
+ }
+
+ if (a->bg->border.width > 0 && a->bg->border.alpha > 0.0) {
+ cairo_set_line_width (c, a->bg->border.width);
+
+ // draw border inside (x, y, width, height)
+ draw_rect(c, a->bg->border.width/2.0, a->bg->border.width/2.0, a->width - a->bg->border.width, a->height - a->bg->border.width, a->bg->border.rounded);
+ /*
+ // convert : radian = degre * M_PI/180
+ // definir le degrade dans un carre de (0,0) (100,100)
+ // ensuite ce degrade est extrapoler selon le ratio width/height
+ // dans repere (0, 0) (100, 100)
+ double X0, Y0, X1, Y1, degre;
+ // x = X * (a->width / 100), y = Y * (a->height / 100)
+ double x0, y0, x1, y1;
+ X0 = 0;
+ Y0 = 100;
+ X1 = 100;
+ Y1 = 0;
+ degre = 45;
+ // et ensuite faire la changement d'unite du repere
+ // car ce qui doit reste inchangee est les traits et pas la direction
+
+ // il faut d'abord appliquer une rotation de 90 (et -180 si l'angle est superieur a 180)
+ // ceci peut etre applique une fois pour toute au depart
+ // ensuite calculer l'angle dans le nouveau repare
+ // puis faire une rotation de 90
+ x0 = X0 * ((double)a->width / 100);
+ x1 = X1 * ((double)a->width / 100);
+ y0 = Y0 * ((double)a->height / 100);
+ y1 = Y1 * ((double)a->height / 100);
+
+ x0 = X0 * ((double)a->height / 100);
+ x1 = X1 * ((double)a->height / 100);
+ y0 = Y0 * ((double)a->width / 100);
+ y1 = Y1 * ((double)a->width / 100);
+
+ cairo_pattern_t *linpat;
+ linpat = cairo_pattern_create_linear (x0, y0, x1, y1);
+ cairo_pattern_add_color_stop_rgba (linpat, 0, a->border.color[0], a->border.color[1], a->border.color[2], a->border.alpha);
+ cairo_pattern_add_color_stop_rgba (linpat, 1, a->border.color[0], a->border.color[1], a->border.color[2], 0);
+ cairo_set_source (c, linpat);
+ */
+ cairo_set_source_rgba (c, a->bg->border.color[0], a->bg->border.color[1], a->bg->border.color[2], a->bg->border.alpha);
+
+ cairo_stroke (c);
+ //cairo_pattern_destroy (linpat);
+ }
}
void remove_area (Area *a)
{
- Area *parent;
-
- parent = (Area*)a->parent;
- parent->list = g_slist_remove(parent->list, a);
- redraw (parent);
+ Area *parent = (Area*)a->parent;
+
+ parent->list = g_slist_remove(parent->list, a);
+ set_redraw (parent);
}
void add_area (Area *a)
{
- Area *parent;
-
- parent = (Area*)a->parent;
- parent->list = g_slist_remove(parent->list, a);
- redraw (parent);
+ Area *parent = (Area*)a->parent;
+
+ parent->list = g_slist_remove(parent->list, a);
+ set_redraw (parent);
}
void free_area (Area *a)
{
- GSList *l0;
- for (l0 = a->list; l0 ; l0 = l0->next)
- free_area (l0->data);
+ GSList *l0;
+ for (l0 = a->list; l0 ; l0 = l0->next)
+ free_area (l0->data);
- if (a->list) {
- g_slist_free(a->list);
- a->list = 0;
- }
+ if (a->list) {
+ g_slist_free(a->list);
+ a->list = 0;
+ }
+ if (a->pix) {
+ XFreePixmap (server.dsp, a->pix);
+ a->pix = 0;
+ }
}
+
+void draw_rect(cairo_t *c, double x, double y, double w, double h, double r)
+{
+ if (r > 0.0) {
+ double c1 = 0.55228475 * r;
+
+ cairo_move_to(c, x+r, y);
+ cairo_rel_line_to(c, w-2*r, 0);
+ cairo_rel_curve_to(c, c1, 0.0, r, c1, r, r);
+ cairo_rel_line_to(c, 0, h-2*r);
+ cairo_rel_curve_to(c, 0.0, c1, c1-r, r, -r, r);
+ cairo_rel_line_to (c, -w +2*r, 0);
+ cairo_rel_curve_to (c, -c1, 0, -r, -c1, -r, -r);
+ cairo_rel_line_to (c, 0, -h + 2 * r);
+ cairo_rel_curve_to (c, 0, -c1, r - c1, -r, r, -r);
+ }
+ else
+ cairo_rectangle(c, x, y, w, h);
+}
+
+
+void clear_pixmap(Pixmap p, int x, int y, int w, int h)
+{
+ Picture pict = XRenderCreatePicture(server.dsp, p, XRenderFindVisualFormat(server.dsp, server.visual), 0, 0);
+ XRenderColor col = { .red=0, .green=0, .blue=0, .alpha=0 };
+ XRenderFillRectangle(server.dsp, PictOpSrc, pict, &col, x, y, w, h);
+ XRenderFreePicture(server.dsp, pict);
+}
projects / chaz / tint2 / blobdiff