ada60fc705
* BUG: Initialize the new BeforeArrange container callback correctly, so that the component does not crash anymore. * BUG: Correctly declare the new BeforeArrange event. [GB.QT] * BUG: Fix the arrangement algorithm, so that it does not keep containers locked when they have no child to arrange. git-svn-id: svn://localhost/gambas/trunk@1800 867c0c6c-44f3-4631-809d-bfa615b0a4ec
597 lines
16 KiB
C
597 lines
16 KiB
C
/***************************************************************************
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gb.form.arrangement.h
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(c) 2000-2007 Benoit Minisini <gambas@users.sourceforge.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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***************************************************************************/
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#define __GB_FORM_ARRANGEMENT_H
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/***************************************************************************
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#define WIDGET_TYPE
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Datatype of variables that points at a widget
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#define CONTAINER_TYPE
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Datatype of variables that points at a container widget
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#define ARRANGEMENT_TYPE
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Datatype of variables that points at the arrangement structure.
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This structure contains all the arrangement flags, and must have (at least)
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the following fields:
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- mode : the arrangement style.
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- spacing : if children must be separate by Desktop.Scale
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- padding : number of pixels around the arrangement area.
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- margin : if the arrangement area must have a margin of Desktop.Scale
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- autoresize : if the container must try to fit its contents.
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- locked : if the container is being arranged.
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- user : if the container is a UserControl or a UserContainer.
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#define IS_RIGHT_TO_LEFT()
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If the current language is right to left written
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#define GET_WIDGET(_object)
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Returns the widget associated with the gambas control
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#define GET_CONTAINER(_object)
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Returns the container widget inside the gambas control that contains the
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child widgets. It can be the same for a Panel, for example, or a sub widget
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for something more complex, like a TabStrip.
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#define GET_ARRANGEMENT(_object)
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Returns a pointer to the arrangement flags of a Gambas control.
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#define IS_EXPAND(_object)
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Returns if the Expand property of a control is set or not.
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#define IS_DESIGN(_object)
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Returns if the control is in design mode.
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#define IS_WIDGET_VISIBLE(_widget)
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Returns if a widget is visible to the screen.
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#define GET_WIDGET_CONTENTS(_widget, _x, _y, _w, _h)
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Sets the _x, _y, _w & _h variables with the dimensions of the area
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inside the container that must be arranged, in container coordinates.
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If the container has a border, for example, then _x > 0 & _y > 0.
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#define GET_WIDGET_X(_widget)
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Returns the x position of a widget inside its parent.
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#define GET_WIDGET_Y(_widget)
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Returns the y position of a widget inside its parent.
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#define GET_WIDGET_W(_widget)
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Returns the width of a widget.
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#define GET_WIDGET_H(_widget)
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Returns the height of a widget.
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#define MOVE_WIDGET(_widget, _x, _y)
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Moves a widget inside its parent.
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#define RESIZE_WIDGET(_widget, _w, _h)
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Resizes a widget.
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#define MOVE_RESIZE_WIDGET(_widget, _x, _y, _w, _h)
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Move & resize a widget simultaneously.
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#define RESIZE_CONTAINER(_container, _w, _h)
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Resizes the container widget by resizing the widget itself.
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#define INIT_CHECK_CHILDREN_LIST(_widget)
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Initializes the list of children of _widget. Must return if there is no
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children.
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#define RESET_CHILDREN_LIST()
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Resets the children list so that its next enumeration starts from the first child.
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#define GET_NEXT_CHILD_WIDGET()
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Returns the next child to arrange, or NULL if there is no child anymore.
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Make a function, as this macro is called several times.
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#define GET_OBJECT_FROM_WIDGET(_widget)
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Returns the Gambas object associated with the specified widget, or NULL if there is
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no Gambas object.
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#define DESKTOP_SCALE
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Returns the value of Desktop.Scale
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#define RAISE_ARRANGE_EVENT(_object)
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Code to raise the Arrange event of containers.
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#define RAISE_BEFORE_ARRANGE_EVENT(_object)
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Code to raise the BeforeArrange event of containers.
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#define FUNCTION_NAME
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This is the name of the arrangement function
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***************************************************************************/
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#define ARRANGE_ROW ARRANGE_LEFT_RIGHT
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#define ARRANGE_COLUMN ARRANGE_TOP_BOTTOM
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void FUNCTION_NAME(void *_object) //(QFrame *cont)
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{
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CONTAINER_TYPE cont;
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ARRANGEMENT_TYPE arr;
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WIDGET_TYPE wid;
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int x, y, w, h, i;
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int xc, yc, wc, hc;
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int wf, hf;
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int dmax = 0, d;
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int sexp, nexp;
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bool swap, autoresize, has_expand_children = false;
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bool redo;
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bool first;
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void *ob;
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bool rtl = IS_RIGHT_TO_LEFT();
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int rtlm = rtl ? -1 : 1;
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int padding;
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//if (qstrcmp(GB.GetClassName(THIS), "FOutput") == 0)
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if (!CAN_ARRANGE(_object))
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return;
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cont = (CONTAINER_TYPE)GET_CONTAINER(_object);
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arr = GET_ARRANGEMENT(_object);
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//if (!IS_WIDGET_VISIBLE(cont) && !IS_WIDGET_VISIBLE(GET_WIDGET(_object)))
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// return;
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//fprintf(stderr, "CCONTAINER_arrange: %s: locked %d: mode %d: autoresize: %d\n", GET_OBJECT_NAME(_object), arr->locked, arr->mode, arr->autoresize);
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if (arr->locked)
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return;
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// if (GET_WIDGET_W(cont) <= 1 || GET_WIDGET_H(cont) <= 1)
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// return;
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//if (qstrcmp(GB.GetClassName(THIS), "FOutput") == 0)
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// qDebug("CCONTAINER_arrange: do it!");
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arr->locked = true;
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#ifdef RAISE_BEFORE_ARRANGE_EVENT
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RAISE_BEFORE_ARRANGE_EVENT(_object);
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#endif
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if (arr->mode != ARRANGE_NONE)
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{
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// g_debug("arrange: %s (%d %d) (%d %d)", ((gControl *)_object)->name(), ((gContainer *)_object)->width(), ((gContainer *)_object)->height(), ((gContainer *)_object)->clientWidth(), ((gContainer *)_object)->clientHeight());
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//usleep(50000);
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if (arr->user)
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cont = (CONTAINER_TYPE)GET_WIDGET(_object);
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// INIT_CHECK_CHILDREN_LIST() can return
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arr->locked = false;
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INIT_CHECK_CHILDREN_LIST(cont);
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arr->locked = true;
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//if (!strcmp(GET_OBJECT_NAME(_object), "HBox1"))
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// fprintf(stderr, "HBox1: child count: %d\n", gtk_count);
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swap = (arr->mode & 1) == 0;
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autoresize = arr->autoresize; // && !IS_EXPAND(_object);
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padding = arr->padding;
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if (arr->margin) padding += DESKTOP_SCALE;
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for(i = 0; i < 3; i++)
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{
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redo = false;
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GET_WIDGET_CONTENTS(cont, xc, yc, wc, hc);
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wf = GET_WIDGET_W(cont) - wc;
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hf = GET_WIDGET_H(cont) - hc;
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//fprintf(stderr, "cont: %s: %d %d %d %d (%d %d)\n", ((gControl *)_object)->name(), xc, yc, wc, hc, wf, hf);
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//if (hc > GET_WIDGET_H(cont))
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// qDebug("hc = %d H = %d ?", hc, GET_WIDGET_H(cont));
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xc += padding;
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yc += padding;
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wc -= padding * 2;
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hc -= padding * 2;
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//qDebug("CCONTAINER_arrange: %p: %s (%d, %d, %d, %d) pad %d spc %d [%d]", THIS, GB.GetClassName(THIS), xc, yc, wc, hc, arr->padding, arr->spacing, i);
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//if (!strcmp(GET_OBJECT_NAME(_object), "HBox1"))
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// fprintf(stderr, "#0: %d %d %d %d\n", xc, yc, wc, hc);
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if (autoresize)
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{
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if (wc <= 0 && hc <= 0)
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break;
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}
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else
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{
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if (wc <= 0 || hc <= 0)
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break;
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}
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//if (!strcmp(GET_OBJECT_NAME(_object), "HBox1"))
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// fprintf(stderr, "#1\n");
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x = xc;
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y = yc;
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w = h = 0;
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if (rtl && !swap)
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x += wc;
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wid = 0;
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RESET_CHILDREN_LIST();
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switch (arr->mode)
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{
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case ARRANGE_HORIZONTAL:
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case ARRANGE_VERTICAL:
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sexp = 0;
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nexp = 0;
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dmax = 0;
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for(;;)
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{
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wid = GET_NEXT_CHILD_WIDGET();
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if (!wid)
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break;
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ob = GET_OBJECT_FROM_WIDGET(wid);
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if (!ob || IS_IGNORE(ob))
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continue;
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if (IS_EXPAND(ob))
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nexp++;
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else
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sexp += (swap ? GET_WIDGET_H(wid) : GET_WIDGET_W(wid));
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if (autoresize)
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{
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d = swap ? GET_WIDGET_W(wid) : GET_WIDGET_H(wid);
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if (d > dmax)
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{
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dmax = d;
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}
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//fprintf(stderr, "%s: %s: d = %d dmax = %d\n", ((gControl *)_object)->name(), wid->name(), d, dmax);
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}
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sexp += arr->spacing;
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}
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has_expand_children = nexp > 0;
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if (autoresize)
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{
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// TODO: use rtl
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if (swap)
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wc = dmax;
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else
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hc = dmax;
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//fprintf(stderr, "%s: dmax = %d\n", ((CWIDGET *)_object)->name, dmax);
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}
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sexp -= arr->spacing;
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sexp = (swap ? hc : wc) - sexp;
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RESET_CHILDREN_LIST();
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wid = 0;
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for(;;)
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{
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first = wid == 0;
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wid = GET_NEXT_CHILD_WIDGET();
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if (!wid)
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break;
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ob = GET_OBJECT_FROM_WIDGET(wid);
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if (!ob || IS_IGNORE(ob))
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continue;
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if (!first)
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{
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if (swap)
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y += arr->spacing;
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else
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x += arr->spacing * rtlm;
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}
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if (swap)
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{
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if (IS_EXPAND(ob)) // && !autoresize)
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{
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h = sexp / nexp;
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sexp -= h;
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nexp--;
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}
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else
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h = GET_WIDGET_H(wid);
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//w = autoresize ? GET_WIDGET_W(wid) : wc;
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w = wc;
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if (h > 0 && w > 0)
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{
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if (w != GET_WIDGET_W(wid) || h != GET_WIDGET_H(wid))
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redo = true;
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MOVE_RESIZE_WIDGET(wid, x, y, w, h);
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y += h;
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}
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}
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else
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{
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if (IS_EXPAND(ob)) // && !autoresize)
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{
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w = sexp / nexp;
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sexp -= w;
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nexp--;
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}
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else
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w = GET_WIDGET_W(wid);
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//h = autoresize ? GET_WIDGET_H(wid) : hc;
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h = hc;
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if (w > 0 && h > 0)
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{
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if (w != GET_WIDGET_W(wid) || h != GET_WIDGET_H(wid))
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redo = true;
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if (rtl)
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MOVE_RESIZE_WIDGET(wid, x - w, y, w, h);
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else
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MOVE_RESIZE_WIDGET(wid, x, y, w, h);
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x += w * rtlm;
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}
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}
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}
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break;
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case ARRANGE_ROW:
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case ARRANGE_COLUMN:
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wc += xc;
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hc += yc;
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for(;;)
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{
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wid = GET_NEXT_CHILD_WIDGET();
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if (!wid)
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break;
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ob = GET_OBJECT_FROM_WIDGET(wid);
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if (!ob || IS_IGNORE(ob))
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continue;
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if (swap)
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{
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if (rtl)
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{
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if ((y > yc) && ((y + (IS_EXPAND(ob) ? 8 : GET_WIDGET_H(wid))) > hc))
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{
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y = yc;
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x -= w + arr->spacing;
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w = 0;
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}
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if (IS_EXPAND(ob))
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{
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MOVE_RESIZE_WIDGET(wid, x - GET_WIDGET_W(wid), y, GET_WIDGET_W(wid), hc - y);
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y = hc + arr->spacing;
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}
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else
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{
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MOVE_WIDGET(wid, x - GET_WIDGET_W(wid), y);
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y += GET_WIDGET_H(wid) + arr->spacing;
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}
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if (GET_WIDGET_W(wid) > w)
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w = GET_WIDGET_W(wid);
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}
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else
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{
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if ((y > yc) && ((y + (IS_EXPAND(ob) ? 8 : GET_WIDGET_H(wid))) > hc))
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{
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y = yc;
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x += w + arr->spacing;
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w = 0;
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}
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if (IS_EXPAND(ob))
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{
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MOVE_RESIZE_WIDGET(wid, x, y, GET_WIDGET_W(wid), hc - y);
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y = hc + arr->spacing;
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}
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else
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{
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MOVE_WIDGET(wid, x, y);
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y += GET_WIDGET_H(wid) + arr->spacing;
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}
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if (GET_WIDGET_W(wid) > w)
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w = GET_WIDGET_W(wid);
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}
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}
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else
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{
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if (rtl)
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{
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if ((x < (xc + wc)) && ((x - (IS_EXPAND(ob) ? 8 : GET_WIDGET_W(wid))) < xc))
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{
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x = xc + wc;
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y += h + arr->spacing;
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h = 0;
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}
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if (IS_EXPAND(ob))
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{
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MOVE_RESIZE_WIDGET(wid, xc, y, x - xc, GET_WIDGET_H(wid));
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x = xc - arr->spacing;
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}
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else
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{
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MOVE_WIDGET(wid, x - GET_WIDGET_W(wid), y);
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x -= GET_WIDGET_W(wid) + arr->spacing;
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}
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if (GET_WIDGET_H(wid) > h)
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h = GET_WIDGET_H(wid);
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}
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else
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{
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if ((x > xc) && ((x + (IS_EXPAND(ob) ? 8 : GET_WIDGET_W(wid))) > wc))
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{
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x = xc;
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y += h + arr->spacing;
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h = 0;
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}
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if (IS_EXPAND(ob))
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{
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MOVE_RESIZE_WIDGET(wid, x, y, wc - x, GET_WIDGET_H(wid));
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x = wc + arr->spacing;
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}
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else
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{
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MOVE_WIDGET(wid, x, y);
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x += GET_WIDGET_W(wid) + arr->spacing;
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}
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if (GET_WIDGET_H(wid) > h)
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h = GET_WIDGET_H(wid);
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}
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}
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}
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break;
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case ARRANGE_FILL:
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w = h = 0;
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for(;;)
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{
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wid = GET_NEXT_CHILD_WIDGET();
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if (!wid)
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break;
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ob = GET_OBJECT_FROM_WIDGET(wid);
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if (!ob || IS_IGNORE(ob))
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continue;
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MOVE_RESIZE_WIDGET(wid, xc, yc, wc, hc);
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if (GET_WIDGET_H(wid) > h)
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h = GET_WIDGET_H(wid);
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if (GET_WIDGET_W(wid) > w)
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w = GET_WIDGET_W(wid);
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}
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break;
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}
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if (autoresize)
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{
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switch(arr->mode)
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{
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case ARRANGE_HORIZONTAL:
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// #ifndef QNAMESPACE_H
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// fprintf(stderr, "%s: HORIZONTAL: x = %d autoresize (%d, %d) pad %d spc %d [%d] rtl %d\n",
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// ((gControl *)_object)->name(), x, x + arr->padding + wf, GET_WIDGET_H(cont), arr->padding, arr->spacing, i, rtl);
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// #else
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// fprintf(stderr, "%s: HORIZONTAL: x = %d autoresize (%d, %d) pad %d spc %d [%d] rtl %d hec %d\n",
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// ((CWIDGET *)_object)->name, x, has_expand_children ? GET_WIDGET_W(cont) : x + arr->padding + wf,
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// dmax + hf, arr->padding, arr->spacing, i, rtl, has_expand_children);
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// #endif
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//cont->resize(x + cont->width() - wc - xc, cont->height());
|
|
if (dmax > 0)
|
|
{
|
|
if (rtl)
|
|
//RESIZE_WIDGET(cont, xc - x + arr->padding + wf, GET_WIDGET_H(cont));
|
|
RESIZE_CONTAINER(GET_WIDGET(_object), cont, has_expand_children ? GET_WIDGET_W(cont) : xc - x + padding + wf, dmax + hf + padding * 2);
|
|
else
|
|
//RESIZE_WIDGET(cont, x + arr->padding + wf, GET_WIDGET_H(cont));
|
|
RESIZE_CONTAINER(GET_WIDGET(_object), cont, has_expand_children ? GET_WIDGET_W(cont) : x + padding + wf, dmax + hf + padding * 2);
|
|
}
|
|
|
|
break;
|
|
|
|
case ARRANGE_VERTICAL:
|
|
// #ifndef QNAMESPACE_H
|
|
// fprintf(stderr, "%s: VERTICAL: x = %d autoresize (%d, %d) pad %d spc %d [%d] rtl %d\n",
|
|
// ((gControl *)_object)->name(), x, x + arr->padding + wf, GET_WIDGET_H(cont), arr->padding, arr->spacing, i, rtl);
|
|
// #else
|
|
// fprintf(stderr, "%s: VERTICAL: y = %d autoresize (%d, %d) pad %d spc %d [%d] rtl %d hec %d\n",
|
|
// ((CWIDGET *)_object)->name, y, dmax + wf, has_expand_children ? GET_WIDGET_H(cont) : y + arr->padding + hf,
|
|
// arr->padding, arr->spacing, i, rtl, has_expand_children);
|
|
// #endif
|
|
//RESIZE_WIDGET(cont, GET_WIDGET_W(cont), y + arr->padding + hf);
|
|
if (dmax > 0)
|
|
RESIZE_CONTAINER(GET_WIDGET(_object), cont, dmax + wf + padding * 2, has_expand_children ? GET_WIDGET_H(cont) : y + padding + hf);
|
|
break;
|
|
|
|
case ARRANGE_COLUMN:
|
|
if (rtl)
|
|
RESIZE_CONTAINER(GET_WIDGET(_object), cont, (wc - x) + w + padding + wf, GET_WIDGET_H(cont));
|
|
else
|
|
RESIZE_CONTAINER(GET_WIDGET(_object), cont, x + w + padding + wf, GET_WIDGET_H(cont));
|
|
break;
|
|
|
|
case ARRANGE_ROW:
|
|
//if ((y + h + arr->padding + GET_WIDGET_H(cont) - hc - yc) < 16)
|
|
// qDebug("y = %d h = %d arr->padding = %d H = %d hc = %d yc = %d -> %d", y, h, arr->padding, GET_WIDGET_H(cont), hc, yc, (y + h + arr->padding + GET_WIDGET_H(cont) - hc - yc));
|
|
RESIZE_CONTAINER(GET_WIDGET(_object), cont, GET_WIDGET_W(cont), y + h + padding + hf);
|
|
break;
|
|
|
|
case ARRANGE_FILL:
|
|
// #ifndef QNAMESPACE_H
|
|
// if (strncmp(((gControl *)_object)->name(), "DataControl", 11) == 0)
|
|
// fprintf(stderr, "%s: RESIZE_CONTAINER(%p, %p, %d, %d)\n", ((gControl *)_object)->name(), GET_WIDGET(_object), cont, w, h);
|
|
// #endif
|
|
RESIZE_CONTAINER(GET_WIDGET(_object), cont, w + padding * 2, h + padding * 2);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!redo)
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
#ifdef RAISE_ARRANGE_EVENT
|
|
RAISE_ARRANGE_EVENT(_object);
|
|
#endif
|
|
|
|
arr->locked = false;
|
|
//qDebug("%p: dirty = FALSE", THIS);
|
|
//arr->dirty = false;
|
|
|
|
//qDebug("CCONTAINER_arrange: END %p", THIS);
|
|
|
|
//qDebug("CCONTAINER_arrange: %p: END", cont);
|
|
}
|
|
|
|
|