haiku-beta6/src/apps/deskbar/TeamMenuItem.cpp

/*
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and shall be included in all copies or substantial portions of the Software.

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*/

#include <Debug.h>
#include <malloc.h>
#include <string.h>
#include <stdio.h>
#include <Bitmap.h>
#include <Font.h>
#include <Region.h>
#include <Roster.h>
#include <Resources.h>

#include "BarApp.h"
#include "BarMenuBar.h"
#include "ExpandoMenuBar.h"
#include "ResourceSet.h"
#include "ShowHideMenuItem.h"
#include "TeamMenu.h"
#include "TeamMenuItem.h"
#include "WindowMenu.h"
#include "WindowMenuItem.h"


const float kHPad = 8.0f;
const float kVPad = 1.0f;
const float kLabelOffset = 8.0f;
const float kSwitchWidth = 12;


TTeamMenuItem::TTeamMenuItem(BList *team, BBitmap *icon, char *name, char *sig,
	float width, float height, bool drawLabel, bool vertical)
	:	BMenuItem(new TWindowMenu(team, sig))
{
	InitData(team, icon, name, sig, width, height, drawLabel, vertical);
}


TTeamMenuItem::TTeamMenuItem(float width,float height,bool vertical)
	:	BMenuItem("", NULL)
{
	InitData(NULL, NULL, strdup(""), strdup(""), width, height, false, vertical);
}


void
TTeamMenuItem::InitData(BList *team, BBitmap *icon, char *name, char *sig,
	float width, float height, bool drawLabel, bool vertical)
{
	fTeam = team;
	fIcon = icon;
	fName = name;
	fSig = sig;
	SetLabel(name);
	if (fName == NULL) {
		char *tmp = (char *)malloc(32);
		sprintf(tmp, "team %ld", (int32)team->ItemAt(0));
		fName = tmp;
	}

	BFont font(be_plain_font);
	fLabelWidth = ceilf(font.StringWidth(fName));
	font_height fontHeight;
	font.GetHeight(&fontHeight);
	fLabelAscent = ceilf(fontHeight.ascent);
	fLabelDescent = ceilf(fontHeight.descent + fontHeight.leading);

	fOverrideWidth = width;
	fOverrideHeight = height;

	fDrawLabel = drawLabel;
	fVertical = vertical;

	fExpanded = false;
}


TTeamMenuItem::~TTeamMenuItem()
{
	delete fTeam;
	delete fIcon;
	free(fName);
	free(fSig);
}


status_t
TTeamMenuItem::Invoke(BMessage *message)
{
	if ((static_cast<TBarApp *>(be_app))->BarView()->InvokeItem(Signature()))
		//	handles drop on application
		return B_OK;

	//	if the app could not handle the drag message
	//	and we were dragging, then kill the drag
	//	should never get here, disabled item will not invoke
	TBarView *barview = (static_cast<TBarApp *>(be_app))->BarView();
	if (barview && barview->Dragging())
		barview->DragStop();

	// bring to front or minimize shortcuts
	uint32 mods = modifiers();	
	if (mods & B_CONTROL_KEY) 
		TShowHideMenuItem::TeamShowHideCommon((mods & B_SHIFT_KEY)
				? B_MINIMIZE_WINDOW : B_BRING_TO_FRONT, Teams());

	return BMenuItem::Invoke(message);
}


void
TTeamMenuItem::SetOverrideWidth(float width)
{
	fOverrideWidth = width;
}


void
TTeamMenuItem::SetOverrideHeight(float height)
{
	fOverrideHeight = height;
}


float
TTeamMenuItem::LabelWidth() const
{
	return fLabelWidth;
}


BList *
TTeamMenuItem::Teams() const
{
	return fTeam;
}


const char *
TTeamMenuItem::Signature() const
{
	return fSig;
}


const char *
TTeamMenuItem::Name() const
{
	return fName;
}


void
TTeamMenuItem::GetContentSize(float *width, float *height)
{
	BRect iconBounds;

	if (fIcon)
		iconBounds = fIcon->Bounds();
	else
		iconBounds = BRect(0, 0, 15, 15);

	BMenuItem::GetContentSize(width, height);

	if (fOverrideWidth != -1.0f)
		*width = fOverrideWidth;
	else
		*width = kHPad + iconBounds.Width() + kLabelOffset + fLabelWidth + kHPad + 20;

	if (fOverrideHeight != -1.0f) 
		*height = fOverrideHeight;
	else {
		*height = iconBounds.Height();
		float labelHeight = fLabelAscent + fLabelDescent;
		if (labelHeight > *height)
			*height = labelHeight;
		*height += (kVPad * 2) + 2;
	}
	*height += 2;
}


void
TTeamMenuItem::Draw()
{
	BRect frame(Frame());
	BMenu *menu = Menu();
	menu->PushState();
	rgb_color menuColor = ui_color(B_MENU_BACKGROUND_COLOR);

	//	if not selected or being tracked on, fill with gray
	TBarView *barview = (static_cast<TBarApp *>(be_app))->BarView();
	bool canHandle = !barview->Dragging() || barview->AppCanHandleTypes(Signature());
	if (!IsSelected() && !menu->IsRedrawAfterSticky() || !canHandle || !IsEnabled()) {
		frame.InsetBy(1, 1);
		menu->SetHighColor(menuColor);
		menu->FillRect(frame);
	}

	//	draw the gray, unselected item, border
	if (!IsSelected() || !IsEnabled()) {
		rgb_color shadow = tint_color(menuColor, B_DARKEN_1_TINT);
		rgb_color light = tint_color(menuColor, B_LIGHTEN_2_TINT);

		frame = Frame();
		if (!fVertical)
			frame.top += 1;

		menu->SetHighColor(shadow);
		if (fVertical)
			menu->StrokeLine(frame.LeftBottom(), frame.RightBottom());
		else
			menu->StrokeLine(frame.LeftBottom() + BPoint(1, 0), frame.RightBottom());

		menu->StrokeLine(frame.RightBottom(), frame.RightTop());

		menu->SetHighColor(light);
		menu->StrokeLine(frame.RightTop() + BPoint(-1, 0), frame.LeftTop());
		if (fVertical)
			menu->StrokeLine(frame.LeftTop(), frame.LeftBottom() + BPoint(0, -1));
		else
			menu->StrokeLine(frame.LeftTop(), frame.LeftBottom());
	}

	//	if selected or being tracked on, fill with the hilite gray color
	if (IsEnabled() && IsSelected() && !menu->IsRedrawAfterSticky() && canHandle) {
		// fill
		menu->SetHighColor(tint_color(menuColor, B_HIGHLIGHT_BACKGROUND_TINT));
		menu->FillRect(frame);

		// these continue the dark grey border on the left or top edge
		menu->SetHighColor(tint_color(menuColor, B_DARKEN_4_TINT));
		if (fVertical)
			// dark line at top
			menu->StrokeLine(frame.LeftTop(), frame.RightTop());
		else
			// dark line on the left
			menu->StrokeLine(frame.LeftTop(), frame.LeftBottom());
	} else 
		menu->SetLowColor(menuColor);

	menu->MovePenTo(ContentLocation());
	DrawContent();
	menu->PopState();
}


void
TTeamMenuItem::DrawContent()
{
	BMenu *menu = Menu();
	if (fIcon) {
		if (fIcon->ColorSpace() == B_RGBA32) {
			menu->SetDrawingMode(B_OP_ALPHA);
			menu->SetBlendingMode(B_PIXEL_ALPHA, B_ALPHA_OVERLAY);
		} else {
			menu->SetDrawingMode(B_OP_OVER);
		}
		BRect frame(Frame());

		if (!fVertical)
			frame.top += 1;

		BRect iconBounds(fIcon->Bounds());
		BRect dstRect(iconBounds);
		float extra = fVertical ? 0.0f : 1.0f;
		BPoint contLoc = ContentLocation();
		dstRect.OffsetTo(BPoint(contLoc.x + kHPad, contLoc.y + 
			((frame.Height() - iconBounds.Height()) / 2) + extra));
		menu->DrawBitmapAsync(fIcon, dstRect);

		menu->SetDrawingMode(B_OP_COPY);

		float labelHeight = fLabelAscent + fLabelDescent;
		BPoint drawLoc = contLoc + BPoint(kHPad, kVPad);
		drawLoc.x += iconBounds.Width() + kLabelOffset;
		drawLoc.y = frame.top + ((frame.Height() - labelHeight) / 2) + 1.0f;
		menu->MovePenTo(drawLoc);
	}

	//	set the pen to black so that either method will draw in the same color
	//	low color is set in inherited::DrawContent, override makes sure its what we want
	if (fDrawLabel) {
		menu->SetHighColor(0, 0, 0);

		//	override the drawing of the content when the item is disabled
		//	the wrong lowcolor is used when the item is disabled since the
		//	text color does not change
		DrawContentLabel();			
	}

	// Draw the expandable icon.
	TBarView *barView = (static_cast<TBarApp *>(be_app))->BarView();
	if (fVertical && static_cast<TBarApp *>(be_app)->Settings()->superExpando
		&& barView->Expando()) {
		BRect frame(Frame());
		BRect rect(0, 0, kSwitchWidth, 10);
		rect.OffsetTo(BPoint(frame.right - rect.Width(),
			ContentLocation().y + ((frame.Height() - rect.Height()) / 2)));

		rgb_color outlineColor = {80, 80, 80, 255};
		rgb_color middleColor = {200, 200, 200, 255};

		menu->SetDrawingMode(B_OP_OVER);

		if (!fExpanded) {
			menu->BeginLineArray(6);

			menu->AddLine(BPoint(rect.left + 3, rect.top + 1), 
				BPoint(rect.left + 3, rect.bottom - 1), outlineColor);
			menu->AddLine(BPoint(rect.left + 3, rect.top + 1), 
				BPoint(rect.left + 7, rect.top + 5), outlineColor);
			menu->AddLine(BPoint(rect.left + 7, rect.top + 5), 
				BPoint(rect.left + 3, rect.bottom - 1), outlineColor);

			menu->AddLine(BPoint(rect.left + 4, rect.top + 3), 
				BPoint(rect.left + 4, rect.bottom - 3), middleColor);
			menu->AddLine(BPoint(rect.left + 5, rect.top + 4), 
				BPoint(rect.left + 5, rect.bottom - 4), middleColor);
			menu->AddLine(BPoint(rect.left + 5, rect.top + 5), 
				BPoint(rect.left + 6, rect.top + 5), middleColor);
			menu->EndLineArray();
		} else {
			// expanded state

			menu->BeginLineArray(6);
			menu->AddLine(BPoint(rect.left + 1, rect.top + 3), 
				BPoint(rect.right - 3, rect.top + 3), outlineColor);
			menu->AddLine(BPoint(rect.left + 1, rect.top + 3), 
				BPoint(rect.left + 5, rect.top + 7), outlineColor);
			menu->AddLine(BPoint(rect.left + 5, rect.top + 7), 
				BPoint(rect.right - 3, rect.top + 3), outlineColor);

			menu->AddLine(BPoint(rect.left + 3, rect.top + 4), 
				BPoint(rect.right - 5, rect.top + 4), middleColor);
			menu->AddLine(BPoint(rect.left + 4, rect.top + 5), 
				BPoint(rect.right - 6, rect.top + 5), middleColor);
			menu->AddLine(BPoint(rect.left + 5, rect.top + 5), 
				BPoint(rect.left + 5, rect.top + 6), middleColor);
			menu->EndLineArray();
		}
	}
}


void
TTeamMenuItem::DrawContentLabel()
{
	BMenu *menu = Menu();
	menu->MovePenBy(0, fLabelAscent);
	menu->SetDrawingMode(B_OP_COPY);

	float cachedWidth = menu->StringWidth(Label());	
	if (Submenu() && fVertical)
		cachedWidth += 18;

	const char *label = Label();
	char *truncLabel = NULL;
	float max = 0;
	if (static_cast<TBarApp *>(be_app)->Settings()->superExpando && fVertical)
		max = menu->MaxContentWidth() - kSwitchWidth;
	else
		max = menu->MaxContentWidth();

	if (max > 0) {
 		BPoint penloc = menu->PenLocation();
		BRect frame = Frame();
		float offset = penloc.x - frame.left;
	 	if (cachedWidth + offset > max) {
			truncLabel = (char *)malloc(strlen(label) + 4);
			if (!truncLabel)
				return;
			TruncateLabel(max-offset, truncLabel);
			label = truncLabel;
		}
	}

	if (!label)
		label = Label();

	TBarView *barview = (static_cast<TBarApp *>(be_app))->BarView();
	bool canHandle = !barview->Dragging() || barview->AppCanHandleTypes(Signature());
	if (IsSelected() && IsEnabled() && canHandle)
		menu->SetLowColor(tint_color(ui_color(B_MENU_BACKGROUND_COLOR),
			B_HIGHLIGHT_BACKGROUND_TINT));
	else
		menu->SetLowColor(menu->ViewColor());

	menu->DrawString(label);

	if (truncLabel)
		free(truncLabel);
}


bool
TTeamMenuItem::IsExpanded()
{
	return fExpanded;
}


void
TTeamMenuItem::ToggleExpandState(bool resizeWindow)
{
	fExpanded = !fExpanded;
	
	if (fExpanded) {
		// Populate Menu() with the stuff from SubMenu().
		TWindowMenu *sub = (static_cast<TWindowMenu *>(Submenu()));
		if (sub) {
			// force the menu to update it's contents.
			bool locked = sub->LockLooper();
				// if locking the looper failed, the menu is just not visible
			sub->AttachedToWindow();
			if (locked)
				sub->UnlockLooper();

			if (sub->CountItems() > 1){
				TExpandoMenuBar *parent = static_cast<TExpandoMenuBar *>(Menu());
				int myindex = parent->IndexOf(this) + 1;

				TWindowMenuItem *windowItem = NULL;
				int childIndex = 0;
				int totalChildren = sub->CountItems() - 4; // hide, show, close, separator.
				for (; childIndex < totalChildren; childIndex++) {
					windowItem = static_cast<TWindowMenuItem *>(sub->RemoveItem((int32)0));
					parent->AddItem(windowItem, myindex + childIndex);
					windowItem->ExpandedItem(true);
				}
				sub->SetExpanded(true, myindex + childIndex);

				if (resizeWindow)
					parent->SizeWindow();
			} else
				fExpanded = fExpanded;
		}
	} else {
		// Remove the goodies from the Menu() that should be in the SubMenu();
		TWindowMenu *sub = static_cast<TWindowMenu *>(Submenu());

		if (sub) {
			TExpandoMenuBar *parent = static_cast<TExpandoMenuBar *>(Menu());

			TWindowMenuItem *windowItem = NULL;
			int childIndex = parent->IndexOf(this) + 1;
			while (!parent->SubmenuAt(childIndex) && childIndex < parent->CountItems()) {
				windowItem = static_cast<TWindowMenuItem *>(parent->RemoveItem(childIndex));
				sub->AddItem(windowItem, 0);
				windowItem->ExpandedItem(false);
			}
			sub->SetExpanded(false, 0);

			if (resizeWindow)
				parent->SizeWindow();
		} else
			fExpanded = fExpanded;
	}
}


TWindowMenuItem*
TTeamMenuItem::ExpandedWindowItem(int32 id)
{
	if (!fExpanded)	// Paranoia
		return NULL;

	TExpandoMenuBar *parent = static_cast<TExpandoMenuBar *>(Menu());
	int childIndex = parent->IndexOf(this) + 1;

	while (!parent->SubmenuAt(childIndex) && childIndex < parent->CountItems()) {
		TWindowMenuItem *item = static_cast<TWindowMenuItem *>(parent->ItemAt(childIndex));
		if (item->ID() == id)
			return item;

		childIndex++;
	}
	return NULL;
}


BRect
TTeamMenuItem::ExpanderBounds() const
{
	BRect bounds(Frame());
	bounds.left = bounds.right - kSwitchWidth;
	return bounds;
}