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- /************************************************************************
- filename: CEGUIUDim.h
- created: Tue May 31 2005
- author: Paul D Turner <paul@cegui.org.uk>
- *************************************************************************/
- /*************************************************************************
- Crazy Eddie's GUI System (http://www.cegui.org.uk)
- Copyright (C)2004 - 2005 Paul D Turner (paul@cegui.org.uk)
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- This library 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *************************************************************************/
- #ifndef _CEGUIUDim_h_
- #define _CEGUIUDim_h_
-
- #include "CEGUIRect.h"
- #include "CEGUIVector.h"
-
- // some macros to aid in the creation of UDims
- #define cegui_absdim(x) UDim(0,(x))
- #define cegui_reldim(x) UDim((x),0)
-
-
- // Start of CEGUI namespace section
- namespace CEGUI
- {
- /*!
- \brief
- Class representing a unified dimension; that is a dimension that has both
- a relative 'scale' portion and and absolute 'offset' portion.
- */
- class CEGUIEXPORT UDim
- {
- public:
- UDim() {}
- UDim(float scale, float offset) : d_scale(scale), d_offset(offset) {}
- ~UDim() {}
-
- float asAbsolute(float base) const { return PixelAligned(base * d_scale) + d_offset; }
- float asRelative(float base) const { return (base != 0.0f) ? d_offset / base + d_scale : 0.0f; }
-
- UDim operator+(const UDim& other) const { return UDim(d_scale + other.d_scale, d_offset + other.d_offset); }
- UDim operator-(const UDim& other) const { return UDim(d_scale - other.d_scale, d_offset - other.d_offset); }
- UDim operator/(const UDim& other) const { return UDim(d_scale / other.d_scale, d_offset / other.d_offset); }
- UDim operator*(const UDim& other) const { return UDim(d_scale * other.d_scale, d_offset * other.d_offset); }
-
- const UDim& operator+=(const UDim& other) { d_scale += other.d_scale; d_offset += other.d_offset; return *this; }
- const UDim& operator-=(const UDim& other) { d_scale -= other.d_scale; d_offset -= other.d_offset; return *this; }
- const UDim& operator/=(const UDim& other) { d_scale /= other.d_scale; d_offset /= other.d_offset; return *this; }
- const UDim& operator*=(const UDim& other) { d_scale *= other.d_scale; d_offset *= other.d_offset; return *this; }
-
- bool operator==(const UDim& other) const { return d_scale == other.d_scale && d_offset == other.d_offset; }
- bool operator!=(const UDim& other) const { return !operator==(other); }
-
- float d_scale, d_offset;
- };
-
- /*!
- \brief
- Two dimensional vector class built using unified dimensions (UDims).
- The UVector2 class is used for representing both positions and sizes.
- */
- class CEGUIEXPORT UVector2
- {
- public:
- UVector2() {}
- UVector2(const UDim& x, const UDim& y) : d_x(x), d_y(y) {}
- ~UVector2() {}
-
- Vector2 asAbsolute(const Size& base) const { return Vector2(d_x.asAbsolute(base.d_width), d_y.asAbsolute(base.d_height)); }
- Vector2 asRelative(const Size& base) const { return Vector2(d_x.asRelative(base.d_width), d_y.asRelative(base.d_height)); }
-
- UVector2 operator+(const UVector2& other) const { return UVector2(d_x + other.d_x, d_y + other.d_y); }
- UVector2 operator-(const UVector2& other) const { return UVector2(d_x - other.d_x, d_y - other.d_y); }
- UVector2 operator/(const UVector2& other) const { return UVector2(d_x / other.d_x, d_y / other.d_y); }
- UVector2 operator*(const UVector2& other) const { return UVector2(d_x * other.d_x, d_y * other.d_y); }
-
- const UVector2& operator+=(const UVector2& other) { d_x += other.d_x; d_y += other.d_y; return *this; }
- const UVector2& operator-=(const UVector2& other) { d_x -= other.d_x; d_y -= other.d_y; return *this; }
- const UVector2& operator/=(const UVector2& other) { d_x /= other.d_x; d_y /= other.d_y; return *this; }
- const UVector2& operator*=(const UVector2& other) { d_x *= other.d_x; d_y *= other.d_y; return *this; }
-
- bool operator==(const UVector2& other) const { return d_x == other.d_x && d_y == other.d_y; }
- bool operator!=(const UVector2& other) const { return !operator==(other); }
-
- UDim d_x, d_y;
- };
-
- /*!
- \brief
- Area rectangle class built using unified dimensions (UDims).
- */
- class CEGUIEXPORT URect
- {
- public:
- URect() {}
-
- URect(const UVector2& min, const UVector2& max) : d_min(min), d_max(max) {}
-
- URect(const UDim& left, const UDim& top, const UDim& right, const UDim& bottom)
- {
- d_min.d_x = left;
- d_min.d_y = top;
- d_max.d_x = right;
- d_max.d_y = bottom;
- }
-
- ~URect() {}
-
- Rect asAbsolute(const Size& base) const
- {
- return Rect(
- d_min.d_x.asAbsolute(base.d_width),
- d_min.d_y.asAbsolute(base.d_height),
- d_max.d_x.asAbsolute(base.d_width),
- d_max.d_y.asAbsolute(base.d_height)
- );
- }
-
- Rect asRelative(const Size& base) const
- {
- return Rect(
- d_min.d_x.asRelative(base.d_width),
- d_min.d_y.asRelative(base.d_height),
- d_max.d_x.asRelative(base.d_width),
- d_max.d_y.asRelative(base.d_height)
- );
- }
-
- const UVector2& getPosition() const { return d_min; }
- UVector2 getSize() const { return d_max - d_min; }
- UDim getWidth() const { return d_max.d_x - d_min.d_x; }
- UDim getHeight() const { return d_max.d_y - d_min.d_y; }
-
- void setPosition(const UVector2& pos)
- {
- UVector2 sz(d_max - d_min);
- d_min = pos;
- d_max = d_min + sz;
- }
-
- void setSize(const UVector2& sz)
- {
- d_max = d_min + sz;
- }
-
- void setWidth(const UDim& w) { d_max.d_x = d_min.d_x + w; }
- void setHeight(const UDim& h) { d_max.d_y = d_min.d_y + h; }
-
- void offset(const UVector2& sz)
- {
- d_min += sz;
- d_max += sz;
- }
-
- UVector2 d_min, d_max;
- };
-
- } // End of CEGUI namespace section
-
-
- #endif // end of guard _CEGUIUDim_h_
-