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/* Copyright (C) 2013 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. 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.
*
* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
// CTooltip: GUI object used for tooltips
#include "precompiled.h"
#include "CTooltip.h"
#include "CGUI.h"
#include <algorithm>
CTooltip::CTooltip()
{
// If the tooltip is an object by itself:
AddSetting(GUIST_float, "buffer_zone");
AddSetting(GUIST_CGUIString, "caption");
AddSetting(GUIST_CStrW, "font");
AddSetting(GUIST_CGUISpriteInstance, "sprite");
AddSetting(GUIST_int, "delay");
AddSetting(GUIST_CColor, "textcolor");
AddSetting(GUIST_float, "maxwidth");
AddSetting(GUIST_CPos, "offset");
AddSetting(GUIST_EVAlign, "anchor");
AddSetting(GUIST_EAlign, "text_align");
// This is used for tooltips that are hidden/revealed manually by scripts, rather than through the standard tooltip display mechanism
AddSetting(GUIST_bool, "independent");
// If the tooltip is just a reference to another object:
AddSetting(GUIST_CStr, "use_object");
AddSetting(GUIST_bool, "hide_object");
// Private settings:
AddSetting(GUIST_CPos, "_mousepos");
// Defaults
GUI<int>::SetSetting(this, "delay", 500);
GUI<EVAlign>::SetSetting(this, "anchor", EVAlign_Bottom);
GUI<EAlign>::SetSetting(this, "text_align", EAlign_Left);
// Set up a blank piece of text, to be replaced with a more
// interesting message later
AddText(new SGUIText());
}
CTooltip::~CTooltip()
{
}
void CTooltip::SetupText()
{
if (!GetGUI())
return;
ENSURE(m_GeneratedTexts.size()==1);
CStrW font;
if (GUI<CStrW>::GetSetting(this, "font", font) != PSRETURN_OK || font.empty())
font = L"default";
float buffer_zone = 0.f;
GUI<float>::GetSetting(this, "buffer_zone", buffer_zone);
CGUIString caption;
GUI<CGUIString>::GetSetting(this, "caption", caption);
float max_width = 0.f;
GUI<float>::GetSetting(this, "maxwidth", max_width);
*m_GeneratedTexts[0] = GetGUI()->GenerateText(caption, font, max_width, buffer_zone, this);
// Position the tooltip relative to the mouse:
CPos mousepos, offset;
EVAlign anchor;
bool independent;
GUI<bool>::GetSetting(this, "independent", independent);
if (independent)
mousepos = GetMousePos();
else
GUI<CPos>::GetSetting(this, "_mousepos", mousepos);
GUI<CPos>::GetSetting(this, "offset", offset);
GUI<EVAlign>::GetSetting(this, "anchor", anchor);
// TODO: Calculate the actual width of the wrapped text and use that.
// (m_Size.cx is >max_width if the text wraps, which is not helpful)
float textwidth = std::min(m_GeneratedTexts[0]->m_Size.cx, (float)max_width);
float textheight = m_GeneratedTexts[0]->m_Size.cy;
CClientArea size;
size.pixel.left = mousepos.x + offset.x;
size.pixel.right = size.pixel.left + textwidth;
switch (anchor)
{
case EVAlign_Top:
size.pixel.top = mousepos.y + offset.y;
size.pixel.bottom = size.pixel.top + textheight;
break;
case EVAlign_Bottom:
size.pixel.bottom = mousepos.y + offset.y;
size.pixel.top = size.pixel.bottom - textheight;
break;
case EVAlign_Center:
size.pixel.top = mousepos.y + offset.y - textheight/2.f;
size.pixel.bottom = size.pixel.top + textwidth;
break;
default:
debug_warn(L"Invalid EVAlign!");
}
// Reposition the tooltip if it's falling off the screen:
extern int g_xres, g_yres;
float screenw = (float)g_xres, screenh = (float)g_yres;
if (size.pixel.top < 0.f)
size.pixel.bottom -= size.pixel.top, size.pixel.top = 0.f;
else if (size.pixel.bottom > screenh)
size.pixel.top -= (size.pixel.bottom-screenh), size.pixel.bottom = screenh;
if (size.pixel.left < 0.f)
size.pixel.right -= size.pixel.left, size.pixel.left = 0.f;
else if (size.pixel.right > screenw)
size.pixel.left -= (size.pixel.right-screenw), size.pixel.right = screenw;
GUI<CClientArea>::SetSetting(this, "size", size);
}
void CTooltip::HandleMessage(SGUIMessage &Message)
{
IGUITextOwner::HandleMessage(Message);
}
void CTooltip::Draw()
{
float z = 900.f; // TODO: Find a nicer way of putting the tooltip on top of everything else
if (GetGUI())
{
CGUISpriteInstance *sprite;
GUI<CGUISpriteInstance>::GetSettingPointer(this, "sprite", sprite);
// Normally IGUITextOwner will handle this updating but since SetupText can modify the position
// we need to call it now *before* we do the rest of the drawing
if (!m_GeneratedTextsValid)
{
SetupText();
m_GeneratedTextsValid = true;
}
GetGUI()->DrawSprite(*sprite, 0, z, m_CachedActualSize);
CColor color;
GUI<CColor>::GetSetting(this, "textcolor", color);
DrawText(0, color, m_CachedActualSize.TopLeft(), z+0.1f);
}
}
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