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431
engines/hpl1/engine/gui/WidgetComboBox.cpp
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431
engines/hpl1/engine/gui/WidgetComboBox.cpp
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/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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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 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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/*
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* Copyright (C) 2006-2010 - Frictional Games
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*
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* This file is part of HPL1 Engine.
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*/
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#include "hpl1/engine/gui/WidgetComboBox.h"
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#include "hpl1/engine/system/low_level_system.h"
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#include "hpl1/engine/math/Math.h"
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#include "hpl1/engine/gui/Gui.h"
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#include "hpl1/engine/gui/GuiGfxElement.h"
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#include "hpl1/engine/gui/GuiSet.h"
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#include "hpl1/engine/gui/GuiSkin.h"
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#include "hpl1/engine/gui/WidgetButton.h"
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#include "hpl1/engine/gui/WidgetSlider.h"
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#include "hpl1/engine/gui/WidgetTextBox.h"
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namespace hpl {
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//////////////////////////////////////////////////////////////////////////
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// CONSTRUCTORS
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//////////////////////////////////////////////////////////////////////////
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//-----------------------------------------------------------------------
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cWidgetComboBox::cWidgetComboBox(cGuiSet *apSet, cGuiSkin *apSkin) : iWidget(eWidgetType_ComboBox, apSet, apSkin) {
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mfButtonWidth = mpSkin->GetAttribute(eGuiSkinAttribute_ComboBoxButtonWidth).x;
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mfSliderWidth = mpSkin->GetAttribute(eGuiSkinAttribute_ComboBoxSliderWidth).x;
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mpText = NULL;
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mpButton = NULL;
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mpSlider = NULL;
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mbMenuOpen = false;
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// mbConnectedToChildren = false;
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mfMenuHeight = 0;
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mlSelectedItem = -1;
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mlMouseOverSelection = -1;
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mlFirstItem = 0;
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mlMaxItems = 12;
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mlItemsShown = 0;
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}
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//-----------------------------------------------------------------------
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cWidgetComboBox::~cWidgetComboBox() {
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if (mpSet->IsDestroyingSet() == false) {
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mpSet->DestroyWidget(mpText);
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mpSet->DestroyWidget(mpButton);
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mpSet->DestroyWidget(mpSlider);
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}
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}
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//-----------------------------------------------------------------------
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//////////////////////////////////////////////////////////////////////////
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// PUBLIC METHODS
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//////////////////////////////////////////////////////////////////////////
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//-----------------------------------------------------------------------
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void cWidgetComboBox::SetSelectedItem(int alX, bool abMoveList) {
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if (mlSelectedItem == alX && (mlSelectedItem < 0 ||
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mpText->GetText() == mvItems[mlSelectedItem]))
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return;
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mlSelectedItem = alX;
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if (abMoveList && mlSelectedItem >= mlFirstItem + mlMaxItems) {
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while (mlSelectedItem >= mlFirstItem + mlMaxItems) {
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mlFirstItem++;
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}
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mpSlider->SetValue(mlFirstItem);
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}
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if (abMoveList && mlSelectedItem < mlFirstItem && mlSelectedItem >= 0) {
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while (mlSelectedItem < mlFirstItem) {
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mlFirstItem--;
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}
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mpSlider->SetValue(mlSelectedItem);
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}
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if (mlSelectedItem >= 0)
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SetText(mvItems[mlSelectedItem]);
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cGuiMessageData data = cGuiMessageData(mlSelectedItem);
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ProcessMessage(eGuiMessage_SelectionChange, data);
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}
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//-----------------------------------------------------------------------
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void cWidgetComboBox::SetCanEdit(bool abX) {
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mpText->SetCanEdit(abX);
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}
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bool cWidgetComboBox::GetCanEdit() {
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return mpText->GetCanEdit();
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}
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//-----------------------------------------------------------------------
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void cWidgetComboBox::SetMaxShownItems(int alX) {
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mlMaxItems = alX;
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UpdateProperties();
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}
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//-----------------------------------------------------------------------
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//////////////////////////////////////////////////////////////////////////
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// PROTECTED METHODS
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//////////////////////////////////////////////////////////////////////////
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//-----------------------------------------------------------------------
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void cWidgetComboBox::UpdateProperties() {
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if ((int)mvItems.size() <= mlMaxItems)
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mlItemsShown = (int)mvItems.size();
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else
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mlItemsShown = mlMaxItems;
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mfMenuHeight = 2 + (mvDefaultFontSize.y + 2) * (float)mlItemsShown + 2;
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OnChangeSize();
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}
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//-----------------------------------------------------------------------
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void cWidgetComboBox::OpenMenu() {
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if (mvItems.empty())
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return;
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if (mbMenuOpen)
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return;
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mpSet->SetAttentionWidget(this);
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mbMenuOpen = true;
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mlMouseOverSelection = mlSelectedItem;
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mvSize = cVector2f(mvSize.x, mvSize.y + mfMenuHeight);
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if ((int)mvItems.size() > mlMaxItems) {
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mpSlider->SetEnabled(true);
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mpSlider->SetVisible(true);
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mpSlider->SetPosition(cVector3f(mvSize.x - 20 - mvGfxBorders[1]->GetActiveSize().x,
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(mvSize.y - mfMenuHeight) + mvGfxBorders[1]->GetActiveSize().y,
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1.2f));
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mpSlider->SetSize(cVector2f(20, mfMenuHeight - mvGfxBorders[1]->GetActiveSize().y -
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mvGfxBorders[2]->GetActiveSize().y));
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mpSlider->SetBarValueSize(mlMaxItems);
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mpSlider->SetMaxValue((int)mvItems.size() - mlMaxItems);
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mpSet->SetFocusedWidget(mpSlider);
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} else {
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mpSet->SetFocusedWidget(this);
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}
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mbClipsGraphics = true;
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}
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//-----------------------------------------------------------------------
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void cWidgetComboBox::CloseMenu() {
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if (mbMenuOpen == false)
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return;
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mpSet->SetAttentionWidget(NULL);
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mbMenuOpen = false;
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mvSize = mpText->GetSize();
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mpSlider->SetEnabled(false);
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mpSlider->SetVisible(false);
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mbClipsGraphics = false;
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}
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//-----------------------------------------------------------------------
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bool cWidgetComboBox::ButtonPress(iWidget *apWidget, cGuiMessageData &aData) {
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if (mbMenuOpen)
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CloseMenu();
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else
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OpenMenu();
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return true;
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}
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kGuiCalllbackDeclaredFuncEnd(cWidgetComboBox, ButtonPress)
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//-----------------------------------------------------------------------
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bool cWidgetComboBox::SliderMove(iWidget *apWidget, cGuiMessageData &aData) {
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mlFirstItem = aData.mlVal;
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return true;
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}
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kGuiCalllbackDeclaredFuncEnd(cWidgetComboBox, SliderMove)
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bool cWidgetComboBox::SliderLostFocus(iWidget *apWidget, cGuiMessageData &aData) {
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if (mbMenuOpen && GetMouseIsOver() == false) {
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CloseMenu();
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}
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return false;
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}
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kGuiCalllbackDeclaredFuncEnd(cWidgetComboBox, SliderLostFocus)
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//-----------------------------------------------------------------------
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void cWidgetComboBox::OnInit() {
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mpText = mpSet->CreateWidgetTextBox(0, mvSize, Common::U32String(), this);
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mpText->SetText(msText);
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mpText->SetCanEdit(false);
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mpButton = mpSet->CreateWidgetButton(0, 0, Common::U32String(), this);
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mpButton->SetImage(mpSkin->GetGfx(eGuiSkinGfx_ComboBoxButtonIcon), false);
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mpButton->AddCallback(eGuiMessage_MouseDown, this, kGuiCallback(ButtonPress));
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mpSlider = mpSet->CreateWidgetSlider(eWidgetSliderOrientation_Vertical, 0, 0, 0, this);
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mpSlider->AddCallback(eGuiMessage_SliderMove, this, kGuiCallback(SliderMove));
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mpSlider->AddCallback(eGuiMessage_LostFocus, this, kGuiCallback(SliderLostFocus));
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mpSlider->SetEnabled(false);
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mpSlider->SetVisible(false);
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AddCallback(eGuiMessage_OnDraw, this, kGuiCallback(DrawText));
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OnChangeSize();
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}
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//-----------------------------------------------------------------------
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void cWidgetComboBox::OnChangeSize() {
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if (mpText && mpButton && mpSlider) {
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mpText->SetSize(mvSize);
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mvSize = mpText->GetSize();
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cVector2f vBackSize = mpText->GetBackgroundSize();
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mpButton->SetSize(cVector2f(mfButtonWidth, vBackSize.y));
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mpButton->SetPosition(cVector3f(mvSize.x - (mvSize.x - vBackSize.x) / 2 - mfButtonWidth,
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(mvSize.y - vBackSize.y) / 2, 0.3f));
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mpSlider->SetBarValueSize(mlMaxItems);
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mpSlider->SetMaxValue((int)mvItems.size() - mlMaxItems);
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}
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}
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//-----------------------------------------------------------------------
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void cWidgetComboBox::OnChangeText() {
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if (mpText)
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mpText->SetText(msText);
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}
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//-----------------------------------------------------------------------
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void cWidgetComboBox::OnLoadGraphics() {
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mpGfxBackground = mpSkin->GetGfx(eGuiSkinGfx_ComboBoxBackground);
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mpGfxSelection = mpSkin->GetGfx(eGuiSkinGfx_TextBoxSelectedTextBack);
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mvGfxBorders[0] = mpSkin->GetGfx(eGuiSkinGfx_ComboBoxBorderRight);
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mvGfxBorders[1] = mpSkin->GetGfx(eGuiSkinGfx_ComboBoxBorderLeft);
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mvGfxBorders[2] = mpSkin->GetGfx(eGuiSkinGfx_ComboBoxBorderUp);
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mvGfxBorders[3] = mpSkin->GetGfx(eGuiSkinGfx_ComboBoxBorderDown);
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mvGfxCorners[0] = mpSkin->GetGfx(eGuiSkinGfx_ComboBoxCornerLU);
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mvGfxCorners[1] = mpSkin->GetGfx(eGuiSkinGfx_ComboBoxCornerRU);
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mvGfxCorners[2] = mpSkin->GetGfx(eGuiSkinGfx_ComboBoxCornerRD);
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mvGfxCorners[3] = mpSkin->GetGfx(eGuiSkinGfx_ComboBoxCornerLD);
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}
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//-----------------------------------------------------------------------
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void cWidgetComboBox::OnDraw(float afTimeStep, cGuiClipRegion *apClipRegion) {
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if (mbMenuOpen) {
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mpSet->DrawGfx(mpGfxBackground, GetGlobalPosition() + cVector3f(0, mvSize.y - mfMenuHeight, 1),
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cVector2f(mvSize.x, mfMenuHeight));
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////////////////////////////////
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// Background and borders
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DrawBordersAndCorners(NULL, mvGfxBorders, mvGfxCorners,
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GetGlobalPosition() + cVector3f(0, mvSize.y - mfMenuHeight, 1.4f),
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cVector2f(mvSize.x, mfMenuHeight));
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}
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}
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//-----------------------------------------------------------------------
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bool cWidgetComboBox::DrawText(iWidget *apWidget, cGuiMessageData &aData) {
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if (mbMenuOpen == false)
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return false;
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cVector3f vPos = GetGlobalPosition() +
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cVector3f(mvGfxBorders[0]->GetActiveSize().x + 3, mpText->GetSize().y + 2, 1.2f);
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for (int i = mlFirstItem; i < (int)mvItems.size(); ++i) {
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if (i - mlFirstItem >= mlMaxItems)
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break;
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if (i == mlMouseOverSelection) {
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mpSet->DrawGfx(mpGfxSelection, vPos - cVector3f(3, 0, 0),
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cVector2f(mvSize.x, mvDefaultFontSize.y));
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}
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DrawDefaultText(mvItems[i], vPos, eFontAlign_Left);
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vPos.y += mvDefaultFontSize.y + 2;
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}
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return true;
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}
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kGuiCalllbackDeclaredFuncEnd(cWidgetComboBox, DrawText)
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//-----------------------------------------------------------------------
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bool cWidgetComboBox::OnMouseMove(cGuiMessageData &aData) {
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if (mbMenuOpen == false)
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return false;
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if (GetMouseIsOver() == false)
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return false;
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cVector3f vLocalPos = WorldToLocalPosition(aData.mvPos);
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if (vLocalPos.y <= mpText->GetSize().y)
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return false;
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if (mpSlider->IsEnabled() && vLocalPos.x >= mvSize.x - 20)
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return false;
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float fToTextStart = 2 + mpText->GetSize().y + mvGfxCorners[0]->GetActiveSize().y;
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int lSelection = (int)((vLocalPos.y - fToTextStart) / (mvDefaultFontSize.y + 2));
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if (lSelection < 0)
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lSelection = 0;
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lSelection = lSelection + mlFirstItem;
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if (lSelection >= (int)mvItems.size())
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lSelection = (int)mvItems.size() - 1;
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mlMouseOverSelection = lSelection;
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return true;
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}
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//-----------------------------------------------------------------------
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bool cWidgetComboBox::OnMouseDown(cGuiMessageData &aData) {
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if (mbMenuOpen == false)
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return false;
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cVector3f vLocal = WorldToLocalPosition(aData.mvPos);
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if (vLocal.y < mpText->GetSize().y) {
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CloseMenu();
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}
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return true;
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}
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//-----------------------------------------------------------------------
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bool cWidgetComboBox::OnMouseUp(cGuiMessageData &aData) {
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if (mbMenuOpen == false)
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return false;
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cVector3f vLocal = WorldToLocalPosition(aData.mvPos);
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if (vLocal.y > mpText->GetSize().y) {
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SetSelectedItem(mlMouseOverSelection);
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CloseMenu();
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}
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return true;
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}
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//-----------------------------------------------------------------------
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bool cWidgetComboBox::OnMouseEnter(cGuiMessageData &aData) {
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return false;
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}
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//-----------------------------------------------------------------------
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bool cWidgetComboBox::OnMouseLeave(cGuiMessageData &aData) {
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return false;
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}
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//-----------------------------------------------------------------------
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bool cWidgetComboBox::OnLostFocus(cGuiMessageData &aData) {
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/*cVector3f vLocal = */ WorldToLocalPosition(aData.mvPos);
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if (mbMenuOpen && mpSlider->IsEnabled() == false) {
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CloseMenu();
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}
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return false;
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}
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//-----------------------------------------------------------------------
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} // namespace hpl
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Reference in New Issue
Block a user