src/util/area.c (raw)
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/************************************************************************** * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. **************************************************************************/ #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 <pango/pangocairo.h> #include "area.h" #include "server.h" #include "panel.h" /************************************************************ * !!! This design is experimental and not yet fully implemented !!!!!!!!!!!!! * * AREA : * Areas in tint2 are similar to widgets in a GUI. * Graphical objects (panel, taskbar, task, systray, clock, ...) in tint2 'inherit' an Area class. * Area is an abstract class of objects. It's at the begining of each object (&object == &area). * Area manage the background and border drawing, size and padding. * * DATA ORGANISATION : * tint2 define one panel per monitor. And each panel have a tree of Area (nodes). * The root of the tree is Panel.Area. And task, clock, systray, taskbar,... are nodes. * * '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 root Panel.Area will have 2 childs (Systray and Clock). * * The tree allow to browse panel's objects from background to foreground and from left to right. * The position of each node/Area depend on parent's position and brothers on the left. * * DRAWING EVENT : * In the end, redrawing an object (like the clock) could come from an external event (date change) * or from a layering event (size or position change). * * DRAWING LOOP : * 1) browse tree and resize SIZE_BY_CONTENT node * - children node are resized before its parent * - if 'size' changed then 'redraw = 1' and 'resize = 1' on the parent * 2) browse tree and resize SIZE_BY_LAYOUT node * - parent node is resized before its children * - if 'size' changed then 'redraw = 1' and 'resize = 1' on childs with SIZE_BY_LAYOUT * 3) calculate posx of objects * - parent's position is calculated before children's position * - if 'position' changed then 'redraw = 1' * 4) redraw needed objects * - parent node is drawn before its children * * perhaps 2) and 3) can be merged... * répartition entre niveau global et niveau local ?? * size_by_content peut-il modifier redraw=1 en cas de changement ? ou est ce géré par chaque composant ? * size_by_layout peut-il modifier redraw ? * ************************************************************/ void refresh (Area *a) { // don't draw and resize hide objects if (!a->on_screen) return; // 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) set_redraw(l->data); //printf("draw area posx %d, width %d\n", a->posx, a->width); draw(a); } // 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); // and then refresh child object GSList *l; for (l = a->list; l ; l = l->next) refresh(l->data); } void size_by_content (Area *a) { // don't draw and resize hide 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 current area's size if (a->resize && a->size_mode == SIZE_BY_CONTENT) { a->resize = 0; // if 'size' changed then 'resize = 1' on the parent if (a->_resize) { a->_resize(a); a->redraw = 1; ((Area*)a->parent)->resize = 1; } } } void size_by_layout (Area *a) { // don't draw and resize hide objects if (!a->on_screen) return; // parent node is resized before its children // calculate current area's size GSList *l; if (a->resize && a->size_mode == SIZE_BY_LAYOUT) { a->resize = 0; // if 'size' changed then 'resize = 1' on childs with SIZE_BY_LAYOUT if (a->_resize) { a->_resize(a); for (l = a->list; l ; l = l->next) { if (((Area*)l->data)->size_mode == SIZE_BY_LAYOUT) ((Area*)l->data)->resize = 1; } } } for (l = a->list; l ; l = l->next) size_by_layout(l->data); } void set_redraw (Area *a) { a->redraw = 1; GSList *l; for (l = a->list ; l ; l = l->next) set_redraw(l->data); } 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->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 = (Area*)a->parent; parent->list = g_slist_remove(parent->list, a); set_redraw (parent); } void add_area (Area *a) { 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); 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); } |