X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Ftint2;a=blobdiff_plain;f=src%2Futil%2Farea.c;h=adec3c9ae55da5720aa28179e0be3f132788f9d8;hp=3b8a468b6674fa615d7e4dc027e39e2c2e15d596;hb=63bbffa4af17926ba2d52728883988eae402b07a;hpb=afc4d060e002f51ed317818e875dae51fbccec12

diff --git a/src/util/area.c b/src/util/area.c
index 3b8a468..adec3c9 100644
--- a/src/util/area.c
+++ b/src/util/area.c
@@ -20,6 +20,7 @@
 #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>
@@ -29,39 +30,183 @@
 #include "server.h"
 #include "panel.h"
 
-// QUESTION: Why do we need Pixmaps for drawing? Can't we draw directly in the Window???
-// Parent could pass a cairo_surface_t to the children, and children use it, for drawing...
+
+/************************************************************
+ * !!! 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 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);
+		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;
+	}
+}
 
 
-// 1) resize child
-// 2) resize parent
-// 3) redraw parent
-// 4) redraw child
 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, 0);
-		if (a->use_active)
-			draw(a, 1);
+		draw(a);
 	}
 
 	// draw current Area
-	Pixmap pmap = (a->is_active == 0) ? (a->pix.pmap) : (a->pix_active.pmap);
-	if (pmap == 0) printf("empty area posx %d, width %d\n", a->posx, a->width);
-	XCopyArea (server.dsp, pmap, ((Panel *)a->panel)->temp_pmap, server.gc, 0, 0, a->width, a->height, a->posx, a->posy);
+	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;
@@ -70,23 +215,83 @@ void refresh (Area *a)
 }
 
 
-void size (Area *a)
+int resize_by_layout(void *obj)
 {
-	GSList *l;
+	Area *child, *a = (Area*)obj;
+	int size, nb_by_content=0, nb_by_layout=0;
 
-	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);
+	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);
+
+		int width=0, modulo=0;
+		if (nb_by_layout) {
+			width = size / nb_by_layout;
+			modulo = size % nb_by_layout;
 		}
 
-		// resize can generate a redraw
-		if (a->_resize)
-			a->_resize(a);
+		// 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;
 }
 
 
@@ -99,57 +304,72 @@ void set_redraw (Area *a)
 		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 draw (Area *a, int active)
+void show(Area *a)
 {
-	Pixmap *pmap = (active == 0) ? (&a->pix.pmap) : (&a->pix_active.pmap);
+	Area *parent = (Area*)a->parent;
+
+	a->on_screen = 1;
+	parent->resize = 1;
+	a->resize = 1;
+}
 
-	if (*pmap) XFreePixmap (server.dsp, *pmap);
-	*pmap = XCreatePixmap (server.dsp, server.root_win, a->width, a->height, server.depth);
+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 (real_transparency)
-		clear_pixmap(*pmap, 0 ,0, a->width, a->height);
-	XCopyArea (server.dsp, ((Panel *)a->panel)->temp_pmap, *pmap, server.gc, a->posx, a->posy, a->width, a->height, 0, 0);
+	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, *pmap, server.visual, a->width, a->height);
+	cs = cairo_xlib_surface_create (server.dsp, a->pix, server.visual, a->width, a->height);
 	c = cairo_create (cs);
 
-	draw_background (a, c, active);
+	draw_background (a, c);
 
 	if (a->_draw_foreground)
-		a->_draw_foreground(a, c, active);
+		a->_draw_foreground(a, c);
 
 	cairo_destroy (c);
 	cairo_surface_destroy (cs);
 }
 
 
-void draw_background (Area *a, cairo_t *c, int active)
+void draw_background (Area *a, cairo_t *c)
 {
-	Pmap *pix = (active == 0) ? (&a->pix) : (&a->pix_active);
-
-	if (pix->back.alpha > 0.0) {
+	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, pix->border.width, pix->border.width, a->width-(2.0 * pix->border.width), a->height-(2.0*pix->border.width), pix->border.rounded - pix->border.width/1.571);
-		cairo_set_source_rgba(c, 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 (pix->border.width > 0 && pix->border.alpha > 0.0) {
-		cairo_set_line_width (c, pix->border.width);
+	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, pix->border.width/2.0, pix->border.width/2.0, a->width - pix->border.width, a->height - pix->border.width, pix->border.rounded);
+		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;
@@ -158,13 +378,13 @@ void draw_background (Area *a, cairo_t *c, int active)
 		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);
@@ -181,7 +401,7 @@ void draw_background (Area *a, cairo_t *c, int active)
 		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, pix->border.color[0], pix->border.color[1], pix->border.color[2], pix->border.alpha);
+		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);
@@ -219,13 +439,9 @@ void free_area (Area *a)
 		g_slist_free(a->list);
 		a->list = 0;
 	}
-	if (a->pix.pmap) {
-		XFreePixmap (server.dsp, a->pix.pmap);
-		a->pix.pmap = 0;
-	}
-	if (a->pix_active.pmap) {
-		XFreePixmap (server.dsp, a->pix_active.pmap);
-		a->pix_active.pmap = 0;
+	if (a->pix) {
+		XFreePixmap (server.dsp, a->pix);
+		a->pix = 0;
 	}
 }
 
@@ -252,12 +468,8 @@ void draw_rect(cairo_t *c, double x, double y, double w, double h, double r)
 
 void clear_pixmap(Pixmap p, int x, int y, int w, int h)
 {
-	cairo_surface_t *tmp = cairo_xlib_surface_create (server.dsp, p, server.visual, w, h);
-	cairo_t *cr = cairo_create(tmp);
-	cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
-	cairo_rectangle(cr, x, y, w, h);
-	cairo_set_source_rgba(cr, 1, 1, 1, 0);
-	cairo_fill(cr);
-	cairo_destroy(cr);
-	cairo_surface_destroy (tmp);
+	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);
 }