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cmultitabs.cxx
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cmultitabs.cxx
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#include <FL/Fl.H>
#include "cmultitabs.h"
#include <FL/fl_draw.H>
#include <FL/Fl_Scroll.H>
#define BORDER 10
#define TABSLOPE 5
#define EXTRASPACE 2
#define TAB_ROW_HEIGHT 20
class CTabInfo {
public:
int x, y, width, height;
int id;
Fl_Group *group;
public:
CTabInfo(int x,int y,int width,int height,int id,Fl_Group *group);
CTabInfo(const CTabInfo& );
bool includesCoord(int x,int y);
};
class CMultiTabsList {
CTabInfo *m_list[32];
unsigned m_count;
int m_active;
public:
CMultiTabsList();
void add(CTabInfo *ti);
void clear();
unsigned count() { return m_count; }
CTabInfo * operator [] (unsigned index) { return m_list[index]; }
int active() { return m_active; }
void active(int activeIndex) { m_active = activeIndex; }
void sety(int ycoord);
CTabInfo *activeTab();
CTabInfo *tabAt(int x,int y);
int indexOf(CTabInfo *ti);
void extend(int width);
};
class CMultiTabsMatrix {
unsigned m_count;
CMultiTabsList *m_list[16];
public:
CMultiTabsMatrix() { m_count = 0; }
~CMultiTabsMatrix() { clear(); }
void add(CMultiTabsList *tl);
void clear();
unsigned count() { return m_count; }
CMultiTabsList * operator [] (unsigned index) { return (CMultiTabsList *)m_list[index]; }
void activate(int rowIndex,int tabIndex);
void activate(CTabInfo *);
CTabInfo *tabAt(int x,int y);
};
CTabInfo::CTabInfo(int tx,int ty,int twidth,int theight,int tid,Fl_Group *tgroup) {
x = tx;
y = ty;
width = twidth;
height = theight;
id = tid;
group = tgroup;
}
CTabInfo::CTabInfo(const CTabInfo& ti) {
x = ti.x;
y = ti.y;
width = ti.width;
height = ti.height;
id = ti.id;
group = ti.group;
}
bool CTabInfo::includesCoord(int xx,int yy) {
return ( xx > x && xx < x + width && yy > y && yy < y + height );
}
CMultiTabsList::CMultiTabsList() {
m_active = -1;
m_count = 0;
}
void CMultiTabsList::extend(int width) {
if (!m_count) return;
CTabInfo *ti = m_list[m_count-1];
int totalWidth = ti->x + ti->width;
float extendX = (width - totalWidth) / m_count;
for (unsigned t=0; t < m_count; t++) {
m_list[t]->x += int( t * extendX + 0.5 );
m_list[t]->width += int( extendX );
}
}
void CMultiTabsList::add(CTabInfo *ti) {
if (m_count >= 32) return;
m_list[m_count] = ti;
m_count++;
}
void CMultiTabsList::clear() {
for (unsigned i=0; i < m_count; i++) {
delete m_list[i];
}
m_count = 0;
}
CTabInfo *CMultiTabsList::activeTab() {
if (m_active == -1) return 0;
return m_list[m_active];
}
void CMultiTabsList::sety(int ycoord) {
for (unsigned i=0; i < m_count; i++) {
m_list[i]->y = ycoord;
}
}
CTabInfo *CMultiTabsList::tabAt(int x,int y) {
for (unsigned i=0; i < m_count; i++) {
CTabInfo * tab = m_list[i];
if (tab->includesCoord(x,y))
return tab;
}
return 0;
}
int CMultiTabsList::indexOf(CTabInfo *ti) {
for (unsigned i=0; i < m_count; i++) {
CTabInfo * tab = m_list[i];
if (tab == ti)
return i;
}
return -1;
}
void CMultiTabsMatrix::add(CMultiTabsList *tl) {
if (m_count >= 8) return;
m_list[m_count] = tl;
m_count++;
}
void CMultiTabsMatrix::clear() {
for (unsigned i=0; i < m_count; i++) {
delete m_list[i];
}
m_count = 0;
}
void CMultiTabsMatrix::activate(int rowIndex,int tabIndex) {
// find currently active row
if (!m_count) return;
unsigned activeRowIndex = m_count-1;
CMultiTabsList *activeRow = (CMultiTabsList *)m_list[activeRowIndex];
CMultiTabsList *row = (CMultiTabsList *)m_list[rowIndex];
int ycoord = TAB_ROW_HEIGHT * activeRowIndex;
row->sety(ycoord);
row->active(tabIndex);
if ((int)activeRowIndex != rowIndex) {
// move row coordinates for the currently active row
ycoord = TAB_ROW_HEIGHT * rowIndex;
activeRow->sety(ycoord);
activeRow->active(-1);
// swap the rows visually
m_list[rowIndex] = activeRow;
m_list[activeRowIndex] = row;
}
}
void CMultiTabsMatrix::activate(CTabInfo *ti) {
// find tab's row
for (unsigned i=0; i < m_count; i++) {
int tabIndex = m_list[i]->indexOf(ti);
if (tabIndex > -1) {
activate(i,tabIndex);
break;
}
}
}
CTabInfo *CMultiTabsMatrix::tabAt(int x,int y) {
for (unsigned i=0; i < m_count; i++) {
CTabInfo *tab = m_list[i]->tabAt(x,y);
if (tab)
return tab;
}
return 0;
}
CMultiTabs::CMultiTabs(int X,int Y,int W, int H,const char *l) :
Fl_Group(X,Y,W,H,l) {
m_tabsMatrix = new CMultiTabsMatrix;
box(FL_THIN_UP_BOX);
push_ = 0;
m_showTabs = true;
m_page = 0L;
m_autoColorIndex = 0;
}
CMultiTabs::~CMultiTabs() {
delete m_tabsMatrix;
}
// this is used by fluid to pick tabs:
Fl_Widget *CMultiTabs::which(int event_x, int event_y) {
int H = m_tabsHeight;
if (H < 0) {
if (event_y > y()+h() || event_y < y()+h()+H) return 0;
} else {
if (event_y > y()+H || event_y < y()) return 0;
}
if (event_x < x()) return 0;
CTabInfo *tab = m_tabsMatrix->tabAt(event_x-x(),event_y-y());
if (tab) {
m_tabsMatrix->activate(tab);
return tab->group;
}
return 0;
}
int CMultiTabs::handle(int event) {
Fl_Widget *o;
switch (event) {
case FL_PUSH: {
int H = m_tabsHeight;
if (H >= 0) {
if (Fl::event_y() > y()+H) goto DEFAULT;
} else {
if (Fl::event_y() < y()+h()+H) goto DEFAULT;
}}
case FL_DRAG:
case FL_RELEASE:
o = which(Fl::event_x(), Fl::event_y());
if (event == FL_RELEASE) {push(0); if (o && value(o)) do_callback();}
else push(o);
return 1;
default:
DEFAULT:
return Fl_Group::handle(event);
}
}
int CMultiTabs::push(Fl_Widget *o) {
if (push_ == o) return 0;
if (push_ && !push_->visible() || o && !o->visible())
damage(FL_DAMAGE_EXPOSE);
push_ = o;
return 1;
}
// The value() is the first visible child (or the last child if none
// are visible) and this also hides any other children.
// This allows the tabs to be deleted, moved to other groups, and
// show()/hide() called without it screwing up.
Fl_Widget* CMultiTabs::value() {
Fl_Widget* v = 0;
Fl_Widget*const* a = array();
for (int i=children(); i--;) {
Fl_Widget* o = *a++;
if (v) o->hide();
else if (o->visible()) v = o;
else if (!i) {o->show(); v = o;}
}
return v;
}
// Setting the value hides all other children, and makes this one
// visible, iff it is really a child:
int CMultiTabs::value(Fl_Widget *newvalue) {
Fl_Widget*const* a = array();
int ret = 0;
for (int i=children(); i--;) {
Fl_Widget* o = *a++;
if (o == newvalue) {
if (!o->visible()) ret = 1;
o->show();
} else {
o->hide();
}
}
return ret;
}
enum {LEFT, RIGHT, SELECTED};
void CMultiTabs::draw() {
//resizeTabs();
resize(x(),y(),w(),h());
Fl_Widget *v = value();
int H = m_tabsHeight;
if (damage() & FL_DAMAGE_ALL) { // redraw the entire thing:
fl_color(color());
fl_rectf(x(), y(), w(), h());
fl_clip (x(), y()+H, w(), h()-H);
draw_box(box(), x(), y(), w(), h(), v ? v->color() : color());
fl_pop_clip();
if (v) draw_child(*v);
} else { // redraw the child
if (v) update_child(*v);
}
if (damage() & (FL_DAMAGE_EXPOSE|FL_DAMAGE_ALL)) {
unsigned rowCount = m_tabsMatrix->count();
for (unsigned r = 0; r < rowCount; r++) {
CMultiTabsList& row = *(*m_tabsMatrix)[r];
int rowTabCount = row.count();
for (int t = 0; t < rowTabCount; t++) {
CTabInfo *tab = row[t];
if (row.active()==t)
draw_tab(tab,true);
else draw_tab(tab,row.active()==t);
}
}
}
}
void CMultiTabs::draw_tab(CTabInfo *tab, int selected) {
if (!m_showTabs) return;
//fl_color(!selected ? fl_darker( tab->group->color() ) : tab->group->color() );
fl_color(tab->group->color());
// Draw the background of the tab
int x1 = x() + tab->x;
int x2 = x1 + tab->width;
int y1 = y() + tab->y;
//int y2 = y1 + tab->height;
int y2 = y() + m_tabsHeight;
fl_begin_polygon();
fl_vertex(x1+2, y2+selected);
fl_vertex(x1+2, y1+TABSLOPE);
fl_vertex(x1+2+TABSLOPE, y1);
fl_vertex(x2, y1);
fl_vertex(x2, y2+selected);
fl_end_polygon();
// Draw the front-top highlighted edge of the tab
//fl_color(!selected && tab->group==push_ ? fl_darker(tab->group->color()) : fl_lighter(tab->group->color()));
fl_color(fl_lighter(fl_lighter(tab->group->color())));
fl_line(x1+2, y2, x1+2, y1+TABSLOPE, x1+2+TABSLOPE, y1);
fl_line(x1+2+TABSLOPE, y1, x2, y1);
if (selected) {
if (x1>x()) fl_xyline(x(), y2, x1);
if (x2+TABSLOPE < x()+w()-1) fl_xyline(x2, y2, x()+w()-1);
}
//fl_color(!selected && tab->group==push_ ? fl_lighter(tab->group->color()) : fl_darker(tab->group->color()));
fl_color(fl_darker(tab->group->color()));
fl_line(x2, y1, x2, y2);
tab->group->draw_label(x1+4,y1,tab->width-6,tab->height,FL_ALIGN_CENTER);
}
void CMultiTabs::resizeTabs() {
int selected = -1;
int xpos = 0;
int wt = 0, ht = 0;
Fl_Widget* const* a = array();
CTabInfo *activeTab = 0L;
CMultiTabsList *row = 0L;
m_tabsMatrix->clear();
int ypos = 0;
int ystep = 0;
if (m_showTabs)
ystep = TAB_ROW_HEIGHT;
row = new CMultiTabsList;
m_tabsMatrix->add(row);
for (int i=0; i<children(); i++) {
Fl_Widget * group = *a++;
wt = 0;
if (group->label())
group->measure_label(wt,ht);
wt += 6;
if (xpos + wt > w()) {
if (row->count() > 0) {
xpos = 0;
ypos += ystep;
row = new CMultiTabsList;
m_tabsMatrix->add(row);
} else {
wt = w() - xpos;
}
}
CTabInfo *tab = new CTabInfo(xpos,ypos,wt,TAB_ROW_HEIGHT,i,(Fl_Group *)group);
xpos += wt;
if (group->visible()) {
selected = i;
activeTab = tab;
}
row->add(tab);
}
m_tabsHeight = ypos + ystep;
m_tabsMatrix->activate(activeTab);
extendTabs();
}
void CMultiTabs::resize(int xx, int yy, int ww, int hh) {
Fl_Group::resize(xx,yy,ww,hh);
resizeTabs();
int group_x = xx + 2;
int group_y = yy + m_tabsHeight + 2;
int group_w = ww - 4;
int group_h = hh - m_tabsHeight - 4;
Fl_Widget*const* a = array();
for (int i=children(); i--;) {
Fl_Widget* group = *a++;
if (group->x() != group_x || group->y() != group_y || group->w() != group_w || group->h() != group_h) {
group->resize(group_x,group_y,group_w,group_h);
}
}
}
void CMultiTabs::extendTabs() {
unsigned cnt = m_tabsMatrix->count();
for (unsigned r = 0; r < cnt; r++) {
(*m_tabsMatrix)[r]->extend(w()-2);
}
}
const Fl_Color CMultiTabs::AutoColorTable[16] = {
fl_rgb_color(240,190,190),
fl_rgb_color(0xB0,0xD0,0xD0),
fl_rgb_color(0xC0,0xC0,0xE0),
fl_rgb_color(192,176,160),
fl_rgb_color(0xD0,0xD0,0xB0),
fl_rgb_color(0xC0,0xB0,0xC0),
fl_rgb_color(0xC0,0xA0,0x90),
fl_rgb_color(0xD0,0xD0,0xE8),
fl_rgb_color(0xE8,0xC0,0xC0),
fl_rgb_color(0xC0,0xE8,0xC0),
fl_rgb_color(0xE8,0xC0,0xE8),
fl_rgb_color(0xE0,0xE0,0xC0),
fl_rgb_color(0xC0,0xE0,0xE0),
fl_rgb_color(0xE0,0xC0,0xE0),
fl_rgb_color(0xA0,0xB8,0xA0),
fl_rgb_color(0xB8,0xC0,0xE8)
};
Fl_Group* CMultiTabs::createNewPage(const char *label) {
Fl_Group* group = lastTab();
if (group)
group->end();
return new Fl_Scroll(x(),y(),w(),h(),label);
}
Fl_Group* CMultiTabs::newPage(const char *label,bool autoColor) {
Fl_Group* group = createNewPage(label);
group->box(FL_FLAT_BOX);
if (children() > 1)
group->hide();
if (autoColor) {
Fl_Color clr = AutoColorTable[m_autoColorIndex&0xF];
group->color( clr );
m_autoColorIndex++;
}
return group;
}
Fl_Group* CMultiTabs::newPage(const char *label,Fl_Color color) {
Fl_Group* group = newPage(label,false);
group->color(color);
return group;
}
Fl_Group* CMultiTabs::lastTab() {
// find the last children
Fl_Widget*const* a = array();
Fl_Group* group = 0L;
for (int i=children(); i--;) {
group = (Fl_Group*) *a++;
}
return group;
}