#include "panel.h"
-// 1) resize child
-// 2) resize parent
-// 3) redraw parent
-// 4) redraw child
+/************************************************************
+ * !!! 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 all 'layering event'.
+ * 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 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 size_by_layout (Area *a, int pos, int level)
+{
+ // 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);
+ i++;
+
+ if (pos != child->posx) {
+ // pos changed => redraw
+ child->posx = pos;
+ child->redraw = 1;
+ }
+ //printf("level %d, object %d, pos %d\n", level, i, pos);
+
+ size_by_layout(child, pos, level+1);
+
+ pos += child->width + a->paddingx;
+ }
+}
+
+
void refresh (Area *a)
{
// don't draw and resize hide objects
if (!a->on_screen) return;
- size(a);
-
// 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);
+ ((Area*)l->data)->redraw = 1;
+// set_redraw(l->data);
//printf("draw area posx %d, width %d\n", a->posx, a->width);
draw(a);
}
-void size (Area *a)
-{
- GSList *l;
-
- if (a->resize) {
- a->resize = 0;
- // force the resize of childs
- for (l = a->list; l ; l = l->next) {
- Area *area = (Area*)l->data;
- area->resize = 1;
- size(area);
- }
-
- // resize can generate a redraw
- if (a->_resize)
- a->_resize(a);
- }
-}
-
-
void set_redraw (Area *a)
{
a->redraw = 1;
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
- // 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)
+ // 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;
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
+ // 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 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°
+ // 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);
projects / chaz / tint2 / blobdiff