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CComponents: implement scroll functionality into CComponentsForm

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CComponentsForm provides page scroll if found more
than one pre defined page and is working with all derivated sub classes from CComponentsForm .

Pages are defined with setPageNumber(0...n) in items (1st page = 0). The item page number property is
defined in variable cc_page_number. The highest page number sets the
count of pages inside container to required value. Thats compellingly!

To show a page, we can use setCurrentPage(0...n ) and paintCurPage() or use directly paintPage(0...n).
Note: global paint() will show the current page. Default page is 0 (as first).
Use setCurrentPage(0...n) to change this before first call of paint().
Note: In CComponentsWindow class, these methods are applied to window body.

For examples, take a look into CTestMenu
This commit is contained in:
Thilo Graf
2014-06-26 09:59:19 +02:00
parent e6f6931b72
commit 672757606c
13 changed files with 485 additions and 24 deletions
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175
src/gui/components/cc_frm_scrollbar.cpp Normal file
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/*
Based up Neutrino-GUI - Tuxbox-Project
Copyright (C) 2001 by Steffen Hehn 'McClean'
Scrollbar class based up CComponentsFrmChain.
Copyright (C) 2014 Thilo Graf 'dbt'
License: GPL
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
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, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <global.h>
#include <neutrino.h>
#include "cc_frm_scrollbar.h"
#include "system/debug.h"
using namespace std;
/* base schema
x,y
+-----------------+
|+---------------+|
||sb_up_obj ||
|| ||
|+---------------+|
|+---------------+|
||sb_segments_obj||
||+-------------+||
||| segment |||
||| id 0 |||
||| |||
||+-------------+||
||| segment |||
||| id 1 |||
||| |||
||+-------------+||
|+---------------+|
|+---------------+|
||sb_up_obj ||
|| ||
|+---------------+|
+-----------------+
*/
//sub class CComponentsScrollBar inherit from CComponentsFrmChain
CComponentsScrollBar::CComponentsScrollBar( const int &x_pos, const int &y_pos, const int &w, const int &h,
const int& count,
CComponentsForm* parent,
bool has_shadow,
fb_pixel_t color_frame, fb_pixel_t color_body, fb_pixel_t color_shadow)
:CComponentsFrmChain(x_pos, y_pos, w, h, NULL, CC_DIR_Y, parent, has_shadow, color_frame, color_body, color_shadow)
{
initVarSbForm(count);
}
void CComponentsScrollBar::initVarSbForm(const int& count)
{
cc_item_type = CC_ITEMTYPE_FRM_SCROLLBAR;
fr_thickness = 0;
append_x_offset = 0;
append_y_offset = 2;
sb_up_obj = sb_down_obj = NULL;
sb_segments_obj = NULL;
sb_up_icon = frameBuffer->getIconBasePath() + NEUTRINO_ICON_BUTTON_TOP;
sb_up_icon += ".png";
sb_down_icon = frameBuffer->getIconBasePath() + NEUTRINO_ICON_BUTTON_DOWN;
sb_down_icon += ".png";
sb_segments_count = count;
sb_mark_id = 0;
initCCItems();
}
void CComponentsScrollBar::setSegmentCount(const int& segment_count, const int& mark_id)
{
sb_segments_count = segment_count;
sb_mark_id = mark_id;
initSegments();
}
void CComponentsScrollBar::initCCItems()
{
initTopNaviIcon();
initSegments();
initBottomNaviIcon();
}
void CComponentsScrollBar::initTopNaviIcon()
{
//initialize icon object
if (sb_up_obj == NULL){
sb_up_obj = new CComponentsPicture(CC_CENTERED, fr_thickness, sb_up_icon, this);
sb_up_obj->doPaintBg(false);
}
sb_up_obj->setWidth(width-2*fr_thickness);
}
void CComponentsScrollBar::initBottomNaviIcon()
{
//initialize icon object
if (sb_down_obj == NULL){
sb_down_obj = new CComponentsPicture(CC_CENTERED, CC_APPEND, sb_down_icon, this);
sb_down_obj->doPaintBg(false);
}
sb_down_obj->setWidth(width-2*fr_thickness);
}
void CComponentsScrollBar::initSegments()
{
//init dimensions for segments
int w_seg = width - 4*fr_thickness;
int h_seg = height - (sb_segments_count-1)*append_y_offset;
//calculate height of segment container
int h_seg_obj = height - 2*sb_up_obj->getHeight() - 3*append_y_offset;
//init segment container
if (sb_segments_obj == NULL){
sb_segments_obj = new CComponentsFrmChain(CC_CENTERED, CC_APPEND, w_seg, h_seg_obj, NULL, CC_DIR_Y, this, false);
sb_segments_obj->setFrameThickness(0,0);
sb_segments_obj->setAppendOffset(0, 3);
}else
sb_segments_obj->setDimensionsAll(CC_CENTERED, CC_APPEND, w_seg, h_seg_obj);
//set current color for segment container
sb_segments_obj->setColorBody(col_body);
//clean up segment container before add new segments
sb_segments_obj->clear();
//set y position of 1st segment and set height of segments
int y_seg = 1+ append_y_offset;
h_seg = sb_segments_obj->getHeight()/sb_segments_count - append_y_offset;
//create and add segments to segment container
for(u_int8_t i=0; i<sb_segments_count; i++){
CComponentsShapeSquare *item = new CComponentsShapeSquare(0, y_seg, w_seg, h_seg, sb_segments_obj, false);
y_seg += h_seg + append_y_offset;
int id = sb_segments_obj->getCCItemId(item);
if (sb_mark_id > id){
dprintf(DEBUG_NORMAL, "[CComponentsScrollBar] %s: sb_mark_id out of range current=%d allowed=%d\n", __func__, sb_mark_id, id);
}
//set color for marked id
if (sb_mark_id == id)
item->setColorBody(COL_MENUCONTENTSELECTED_PLUS_0);
else
item->setColorBody(COL_MENUCONTENT_PLUS_1);
}
//set corner types
sb_segments_obj->front()->setCorner(RADIUS_MIN, CORNER_TOP);
sb_segments_obj->back()->setCorner(RADIUS_MIN, CORNER_BOTTOM);
}