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Location: cpp/openttd-patchpack/source/src/widget_type.h - annotation
r20313:782ea1fbc479
40.5 KiB
text/x-c
(svn r25323) -Update from WebTranslator v3.0:
traditional_chinese - 34 changes by siu238X
hungarian - 5 changes by Brumi
traditional_chinese - 34 changes by siu238X
hungarian - 5 changes by Brumi
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r11456:7f48bd533d22 r11456:7f48bd533d22 r11456:7f48bd533d22 r12245:ba404ace85f0 r11456:7f48bd533d22 r11456:7f48bd533d22 r11456:7f48bd533d22 r11456:7f48bd533d22 r11794:2780553402ea r11794:2780553402ea r11794:2780553402ea r11794:2780553402ea r11794:2780553402ea r11745:e83554732991 r11745:e83554732991 r11745:e83554732991 r11745:e83554732991 r11745:e83554732991 r11745:e83554732991 r11745:e83554732991 r11745:e83554732991 r11745:e83554732991 r11745:e83554732991 r14034:1f5b45c2572f r14034:1f5b45c2572f r11456:7f48bd533d22 r15866:97ecf119973d r15866:97ecf119973d r11080:fa7a0af18489 | /* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD 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, version 2.
* OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file widget_type.h Definitions about widgets. */
#ifndef WIDGET_TYPE_H
#define WIDGET_TYPE_H
#include "core/alloc_type.hpp"
#include "core/bitmath_func.hpp"
#include "core/math_func.hpp"
#include "strings_type.h"
#include "gfx_type.h"
#include "window_type.h"
static const int WIDGET_LIST_END = -1; ///< indicate the end of widgets' list for vararg functions
/** Bits of the #WWT_MATRIX widget data. */
enum MatrixWidgetValues {
/* Number of column bits of the WWT_MATRIX widget data. */
MAT_COL_START = 0, ///< Lowest bit of the number of columns.
MAT_COL_BITS = 8, ///< Number of bits for the number of columns in the matrix.
/* Number of row bits of the WWT_MATRIX widget data. */
MAT_ROW_START = 8, ///< Lowest bit of the number of rows.
MAT_ROW_BITS = 8, ///< Number of bits for the number of rows in the matrix.
};
/** Values for an arrow widget */
enum ArrowWidgetValues {
AWV_DECREASE, ///< Arrow to the left or in case of RTL to the right
AWV_INCREASE, ///< Arrow to the right or in case of RTL to the left
AWV_LEFT, ///< Force the arrow to the left
AWV_RIGHT, ///< Force the arrow to the right
};
/**
* Window widget types, nested widget types, and nested widget part types.
*/
enum WidgetType {
/* Window widget types. */
WWT_EMPTY, ///< Empty widget, place holder to reserve space in widget array
WWT_PANEL, ///< Simple depressed panel
WWT_INSET, ///< Pressed (inset) panel, most commonly used as combo box _text_ area
WWT_IMGBTN, ///< (Toggle) Button with image
WWT_IMGBTN_2, ///< (Toggle) Button with diff image when clicked
WWT_ARROWBTN, ///< (Toggle) Button with an arrow
WWT_TEXTBTN, ///< (Toggle) Button with text
WWT_TEXTBTN_2, ///< (Toggle) Button with diff text when clicked
WWT_LABEL, ///< Centered label
WWT_TEXT, ///< Pure simple text
WWT_MATRIX, ///< Grid of rows and columns. @see MatrixWidgetValues
WWT_FRAME, ///< Frame
WWT_CAPTION, ///< Window caption (window title between closebox and stickybox)
WWT_DEBUGBOX, ///< NewGRF debug box (at top-right of a window, between WWT_CAPTION and WWT_SHADEBOX)
WWT_SHADEBOX, ///< Shade box (at top-right of a window, between WWT_DEBUGBOX and WWT_DEFSIZEBOX)
WWT_DEFSIZEBOX, ///< Default window size box (at top-right of a window, between WWT_SHADEBOX and WWT_STICKYBOX)
WWT_STICKYBOX, ///< Sticky box (at top-right of a window, after WWT_DEFSIZEBOX)
WWT_RESIZEBOX, ///< Resize box (normally at bottom-right of a window)
WWT_CLOSEBOX, ///< Close box (at top-left of a window)
WWT_DROPDOWN, ///< Drop down list
WWT_EDITBOX, ///< a textbox for typing
WWT_LAST, ///< Last Item. use WIDGETS_END to fill up padding!!
/* Nested widget types. */
NWID_HORIZONTAL, ///< Horizontal container.
NWID_HORIZONTAL_LTR, ///< Horizontal container that doesn't change the order of the widgets for RTL languages.
NWID_VERTICAL, ///< Vertical container.
NWID_MATRIX, ///< Matrix container.
NWID_SPACER, ///< Invisible widget that takes some space.
NWID_SELECTION, ///< Stacked widgets, only one visible at a time (eg in a panel with tabs).
NWID_VIEWPORT, ///< Nested widget containing a viewport.
NWID_BUTTON_DROPDOWN, ///< Button with a drop-down.
NWID_HSCROLLBAR, ///< Horizontal scrollbar
NWID_VSCROLLBAR, ///< Vertical scrollbar
/* Nested widget part types. */
WPT_RESIZE, ///< Widget part for specifying resizing.
WPT_MINSIZE, ///< Widget part for specifying minimal size.
WPT_MINTEXTLINES, ///< Widget part for specifying minimal number of lines of text.
WPT_FILL, ///< Widget part for specifying fill.
WPT_DATATIP, ///< Widget part for specifying data and tooltip.
WPT_PADDING, ///< Widget part for specifying a padding.
WPT_PIPSPACE, ///< Widget part for specifying pre/inter/post space for containers.
WPT_ENDCONTAINER, ///< Widget part to denote end of a container.
WPT_FUNCTION, ///< Widget part for calling a user function.
WPT_SCROLLBAR, ///< Widget part for attaching a scrollbar.
/* Pushable window widget types. */
WWT_MASK = 0x7F,
WWB_PUSHBUTTON = 1 << 7,
WWT_PUSHBTN = WWT_PANEL | WWB_PUSHBUTTON, ///< Normal push-button (no toggle button) with custom drawing
WWT_PUSHTXTBTN = WWT_TEXTBTN | WWB_PUSHBUTTON, ///< Normal push-button (no toggle button) with text caption
WWT_PUSHIMGBTN = WWT_IMGBTN | WWB_PUSHBUTTON, ///< Normal push-button (no toggle button) with image caption
WWT_PUSHARROWBTN = WWT_ARROWBTN | WWB_PUSHBUTTON, ///< Normal push-button (no toggle button) with arrow caption
NWID_PUSHBUTTON_DROPDOWN = NWID_BUTTON_DROPDOWN | WWB_PUSHBUTTON,
};
/** Different forms of sizing nested widgets, using NWidgetBase::AssignSizePosition() */
enum SizingType {
ST_SMALLEST, ///< Initialize nested widget tree to smallest size. Also updates \e current_x and \e current_y.
ST_RESIZE, ///< Resize the nested widget tree.
};
/* Forward declarations. */
class NWidgetCore;
class Scrollbar;
/**
* Baseclass for nested widgets.
* @invariant After initialization, \f$current\_x = smallest\_x + n * resize\_x, for n \geq 0\f$.
* @invariant After initialization, \f$current\_y = smallest\_y + m * resize\_y, for m \geq 0\f$.
* @ingroup NestedWidgets
*/
class NWidgetBase : public ZeroedMemoryAllocator {
public:
NWidgetBase(WidgetType tp);
virtual void SetupSmallestSize(Window *w, bool init_array) = 0;
virtual void AssignSizePosition(SizingType sizing, uint x, uint y, uint given_width, uint given_height, bool rtl) = 0;
virtual void FillNestedArray(NWidgetBase **array, uint length) = 0;
virtual NWidgetCore *GetWidgetFromPos(int x, int y) = 0;
virtual NWidgetBase *GetWidgetOfType(WidgetType tp);
virtual bool IsHighlighted() const { return false; }
virtual TextColour GetHighlightColour() const { return TC_INVALID; }
virtual void SetHighlighted(TextColour highlight_colour) {}
/**
* Set additional space (padding) around the widget.
* @param top Amount of additional space above the widget.
* @param right Amount of additional space right of the widget.
* @param bottom Amount of additional space below the widget.
* @param left Amount of additional space left of the widget.
*/
inline void SetPadding(uint8 top, uint8 right, uint8 bottom, uint8 left)
{
this->padding_top = top;
this->padding_right = right;
this->padding_bottom = bottom;
this->padding_left = left;
}
inline uint GetHorizontalStepSize(SizingType sizing) const;
inline uint GetVerticalStepSize(SizingType sizing) const;
virtual void Draw(const Window *w) = 0;
virtual void SetDirty(const Window *w) const;
WidgetType type; ///< Type of the widget / nested widget.
uint fill_x; ///< Horizontal fill stepsize (from initial size, \c 0 means not resizable).
uint fill_y; ///< Vertical fill stepsize (from initial size, \c 0 means not resizable).
uint resize_x; ///< Horizontal resize step (\c 0 means not resizable).
uint resize_y; ///< Vertical resize step (\c 0 means not resizable).
/* Size of the widget in the smallest window possible.
* Computed by #SetupSmallestSize() followed by #AssignSizePosition().
*/
uint smallest_x; ///< Smallest horizontal size of the widget in a filled window.
uint smallest_y; ///< Smallest vertical size of the widget in a filled window.
/* Current widget size (that is, after resizing). */
uint current_x; ///< Current horizontal size (after resizing).
uint current_y; ///< Current vertical size (after resizing).
uint pos_x; ///< Horizontal position of top-left corner of the widget in the window.
uint pos_y; ///< Vertical position of top-left corner of the widget in the window.
NWidgetBase *next; ///< Pointer to next widget in container. Managed by parent container widget.
NWidgetBase *prev; ///< Pointer to previous widget in container. Managed by parent container widget.
uint8 padding_top; ///< Paddings added to the top of the widget. Managed by parent container widget.
uint8 padding_right; ///< Paddings added to the right of the widget. Managed by parent container widget.
uint8 padding_bottom; ///< Paddings added to the bottom of the widget. Managed by parent container widget.
uint8 padding_left; ///< Paddings added to the left of the widget. Managed by parent container widget.
protected:
inline void StoreSizePosition(SizingType sizing, uint x, uint y, uint given_width, uint given_height);
};
/**
* Get the horizontal sizing step.
* @param sizing Type of resize being performed.
*/
inline uint NWidgetBase::GetHorizontalStepSize(SizingType sizing) const
{
return (sizing == ST_RESIZE) ? this->resize_x : this->fill_x;
}
/**
* Get the vertical sizing step.
* @param sizing Type of resize being performed.
*/
inline uint NWidgetBase::GetVerticalStepSize(SizingType sizing) const
{
return (sizing == ST_RESIZE) ? this->resize_y : this->fill_y;
}
/**
* Store size and position.
* @param sizing Type of resizing to perform.
* @param x Horizontal offset of the widget relative to the left edge of the window.
* @param y Vertical offset of the widget relative to the top edge of the window.
* @param given_width Width allocated to the widget.
* @param given_height Height allocated to the widget.
*/
inline void NWidgetBase::StoreSizePosition(SizingType sizing, uint x, uint y, uint given_width, uint given_height)
{
this->pos_x = x;
this->pos_y = y;
if (sizing == ST_SMALLEST) {
this->smallest_x = given_width;
this->smallest_y = given_height;
}
this->current_x = given_width;
this->current_y = given_height;
}
/**
* Base class for a resizable nested widget.
* @ingroup NestedWidgets
*/
class NWidgetResizeBase : public NWidgetBase {
public:
NWidgetResizeBase(WidgetType tp, uint fill_x, uint fill_y);
void SetMinimalSize(uint min_x, uint min_y);
void SetMinimalTextLines(uint8 min_lines, uint8 spacing, FontSize size);
void SetFill(uint fill_x, uint fill_y);
void SetResize(uint resize_x, uint resize_y);
void AssignSizePosition(SizingType sizing, uint x, uint y, uint given_width, uint given_height, bool rtl);
uint min_x; ///< Minimal horizontal size of only this widget.
uint min_y; ///< Minimal vertical size of only this widget.
};
/** Nested widget flags that affect display and interaction withe 'real' widgets. */
enum NWidgetDisplay {
/* Generic. */
NDB_LOWERED = 0, ///< Widget is lowered (pressed down) bit.
NDB_DISABLED = 1, ///< Widget is disabled (greyed out) bit.
/* Viewport widget. */
NDB_NO_TRANSPARENCY = 2, ///< Viewport is never transparent.
NDB_SHADE_GREY = 3, ///< Shade viewport to grey-scale.
NDB_SHADE_DIMMED = 4, ///< Display dimmed colours in the viewport.
/* Button dropdown widget. */
NDB_DROPDOWN_ACTIVE = 5, ///< Dropdown menu of the button dropdown widget is active. @see #NWID_BUTTON_DRPDOWN
/* Scrollbar widget. */
NDB_SCROLLBAR_UP = 6, ///< Up-button is lowered bit.
NDB_SCROLLBAR_DOWN = 7, ///< Down-button is lowered bit.
/* Generic. */
NDB_HIGHLIGHT = 8, ///< Highlight of widget is on.
ND_LOWERED = 1 << NDB_LOWERED, ///< Bit value of the lowered flag.
ND_DISABLED = 1 << NDB_DISABLED, ///< Bit value of the disabled flag.
ND_HIGHLIGHT = 1 << NDB_HIGHLIGHT, ///< Bit value of the highlight flag.
ND_NO_TRANSPARENCY = 1 << NDB_NO_TRANSPARENCY, ///< Bit value of the 'no transparency' flag.
ND_SHADE_GREY = 1 << NDB_SHADE_GREY, ///< Bit value of the 'shade to grey' flag.
ND_SHADE_DIMMED = 1 << NDB_SHADE_DIMMED, ///< Bit value of the 'dimmed colours' flag.
ND_DROPDOWN_ACTIVE = 1 << NDB_DROPDOWN_ACTIVE, ///< Bit value of the 'dropdown active' flag.
ND_SCROLLBAR_UP = 1 << NDB_SCROLLBAR_UP, ///< Bit value of the 'scrollbar up' flag.
ND_SCROLLBAR_DOWN = 1 << NDB_SCROLLBAR_DOWN, ///< Bit value of the 'scrollbar down' flag.
ND_SCROLLBAR_BTN = ND_SCROLLBAR_UP | ND_SCROLLBAR_DOWN, ///< Bit value of the 'scrollbar up' or 'scrollbar down' flag.
};
DECLARE_ENUM_AS_BIT_SET(NWidgetDisplay)
/**
* Base class for a 'real' widget.
* @ingroup NestedWidgets
*/
class NWidgetCore : public NWidgetResizeBase {
public:
NWidgetCore(WidgetType tp, Colours colour, uint fill_x, uint fill_y, uint32 widget_data, StringID tool_tip);
void SetIndex(int index);
void SetDataTip(uint32 widget_data, StringID tool_tip);
inline void SetLowered(bool lowered);
inline bool IsLowered() const;
inline void SetDisabled(bool disabled);
inline bool IsDisabled() const;
/* virtual */ void FillNestedArray(NWidgetBase **array, uint length);
/* virtual */ NWidgetCore *GetWidgetFromPos(int x, int y);
/* virtual */ bool IsHighlighted() const;
/* virtual */ TextColour GetHighlightColour() const;
/* virtual */ void SetHighlighted(TextColour highlight_colour);
NWidgetDisplay disp_flags; ///< Flags that affect display and interaction with the widget.
Colours colour; ///< Colour of this widget.
int index; ///< Index of the nested widget in the widget array of the window (\c -1 means 'not used').
uint32 widget_data; ///< Data of the widget. @see Widget::data
StringID tool_tip; ///< Tooltip of the widget. @see Widget::tootips
int scrollbar_index; ///< Index of an attached scrollbar.
TextColour highlight_colour; ///< Colour of highlight.
};
/**
* Highlight the widget or not.
* @param highlight_colour Widget must be highlighted (blink).
*/
inline void NWidgetCore::SetHighlighted(TextColour highlight_colour)
{
this->disp_flags = highlight_colour != TC_INVALID ? SETBITS(this->disp_flags, ND_HIGHLIGHT) : CLRBITS(this->disp_flags, ND_HIGHLIGHT);
this->highlight_colour = highlight_colour;
}
/** Return whether the widget is highlighted. */
inline bool NWidgetCore::IsHighlighted() const
{
return HasBit(this->disp_flags, NDB_HIGHLIGHT);
}
/** Return the colour of the highlight. */
inline TextColour NWidgetCore::GetHighlightColour() const
{
return this->highlight_colour;
}
/**
* Lower or raise the widget.
* @param lowered Widget must be lowered (drawn pressed down).
*/
inline void NWidgetCore::SetLowered(bool lowered)
{
this->disp_flags = lowered ? SETBITS(this->disp_flags, ND_LOWERED) : CLRBITS(this->disp_flags, ND_LOWERED);
}
/** Return whether the widget is lowered. */
inline bool NWidgetCore::IsLowered() const
{
return HasBit(this->disp_flags, NDB_LOWERED);
}
/**
* Disable (grey-out) or enable the widget.
* @param disabled Widget must be disabled.
*/
inline void NWidgetCore::SetDisabled(bool disabled)
{
this->disp_flags = disabled ? SETBITS(this->disp_flags, ND_DISABLED) : CLRBITS(this->disp_flags, ND_DISABLED);
}
/** Return whether the widget is disabled. */
inline bool NWidgetCore::IsDisabled() const
{
return HasBit(this->disp_flags, NDB_DISABLED);
}
/**
* Baseclass for container widgets.
* @ingroup NestedWidgets
*/
class NWidgetContainer : public NWidgetBase {
public:
NWidgetContainer(WidgetType tp);
~NWidgetContainer();
void Add(NWidgetBase *wid);
/* virtual */ void FillNestedArray(NWidgetBase **array, uint length);
/** Return whether the container is empty. */
inline bool IsEmpty() { return head == NULL; }
/* virtual */ NWidgetBase *GetWidgetOfType(WidgetType tp);
protected:
NWidgetBase *head; ///< Pointer to first widget in container.
NWidgetBase *tail; ///< Pointer to last widget in container.
};
/** Display planes with zero size for #NWidgetStacked. */
enum StackedZeroSizePlanes {
SZSP_VERTICAL = INT_MAX / 2, ///< Display plane with zero size horizontally, and filling and resizing vertically.
SZSP_HORIZONTAL, ///< Display plane with zero size vertically, and filling and resizing horizontally.
SZSP_NONE, ///< Display plane with zero size in both directions (none filling and resizing).
SZSP_BEGIN = SZSP_VERTICAL, ///< First zero-size plane.
};
/**
* Stacked widgets, widgets all occupying the same space in the window.
* #NWID_SELECTION allows for selecting one of several panels (planes) to tbe displayed. All planes must have the same size.
* Since all planes are also initialized, switching between different planes can be done while the window is displayed.
*
* There are also a number of special planes (defined in #StackedZeroSizePlanes) that have zero size in one direction (and are stretchable in
* the other direction) or have zero size in both directions. They are used to make all child planes of the widget disappear.
* Unlike switching between the regular display planes (that all have the same size), switching from or to one of the zero-sized planes means that
* a #Windows::ReInit() is needed to re-initialize the window since its size changes.
*/
class NWidgetStacked : public NWidgetContainer {
public:
NWidgetStacked();
void SetIndex(int index);
void SetupSmallestSize(Window *w, bool init_array);
void AssignSizePosition(SizingType sizing, uint x, uint y, uint given_width, uint given_height, bool rtl);
/* virtual */ void FillNestedArray(NWidgetBase **array, uint length);
/* virtual */ void Draw(const Window *w);
/* virtual */ NWidgetCore *GetWidgetFromPos(int x, int y);
void SetDisplayedPlane(int plane);
int shown_plane; ///< Plane being displayed (for #NWID_SELECTION only).
int index; ///< If non-negative, index in the #Window::nested_array.
};
/** Nested widget container flags, */
enum NWidContainerFlags {
NCB_EQUALSIZE = 0, ///< Containers should keep all their (resizing) children equally large.
NC_NONE = 0, ///< All flags cleared.
NC_EQUALSIZE = 1 << NCB_EQUALSIZE, ///< Value of the #NCB_EQUALSIZE flag.
};
DECLARE_ENUM_AS_BIT_SET(NWidContainerFlags)
/** Container with pre/inter/post child space. */
class NWidgetPIPContainer : public NWidgetContainer {
public:
NWidgetPIPContainer(WidgetType tp, NWidContainerFlags flags = NC_NONE);
void SetPIP(uint8 pip_pre, uint8 pip_inter, uint8 pip_post);
/* virtual */ void Draw(const Window *w);
/* virtual */ NWidgetCore *GetWidgetFromPos(int x, int y);
protected:
NWidContainerFlags flags; ///< Flags of the container.
uint8 pip_pre; ///< Amount of space before first widget.
uint8 pip_inter; ///< Amount of space between widgets.
uint8 pip_post; ///< Amount of space after last widget.
};
/**
* Horizontal container.
* @ingroup NestedWidgets
*/
class NWidgetHorizontal : public NWidgetPIPContainer {
public:
NWidgetHorizontal(NWidContainerFlags flags = NC_NONE);
void SetupSmallestSize(Window *w, bool init_array);
void AssignSizePosition(SizingType sizing, uint x, uint y, uint given_width, uint given_height, bool rtl);
};
/**
* Horizontal container that doesn't change the direction of the widgets for RTL languages.
* @ingroup NestedWidgets
*/
class NWidgetHorizontalLTR : public NWidgetHorizontal {
public:
NWidgetHorizontalLTR(NWidContainerFlags flags = NC_NONE);
void AssignSizePosition(SizingType sizing, uint x, uint y, uint given_width, uint given_height, bool rtl);
};
/**
* Vertical container.
* @ingroup NestedWidgets
*/
class NWidgetVertical : public NWidgetPIPContainer {
public:
NWidgetVertical(NWidContainerFlags flags = NC_NONE);
void SetupSmallestSize(Window *w, bool init_array);
void AssignSizePosition(SizingType sizing, uint x, uint y, uint given_width, uint given_height, bool rtl);
};
/**
* Matrix container with implicitly equal sized (virtual) sub-widgets.
* This widget must have exactly one sub-widget. After that this sub-widget
* is used to draw all of the data within the matrix piece by piece.
* DrawWidget and OnClick calls will be done to that sub-widget, where the
* 16 high bits are used to encode the index into the matrix.
* @ingroup NestedWidgets
*/
class NWidgetMatrix : public NWidgetPIPContainer {
public:
NWidgetMatrix();
void SetIndex(int index);
void SetColour(Colours colour);
void SetClicked(int clicked);
void SetCount(int count);
void SetScrollbar(Scrollbar *sb);
void SetupSmallestSize(Window *w, bool init_array);
void AssignSizePosition(SizingType sizing, uint x, uint y, uint given_width, uint given_height, bool rtl);
/* virtual */ void FillNestedArray(NWidgetBase **array, uint length);
/* virtual */ NWidgetCore *GetWidgetFromPos(int x, int y);
/* virtual */ void Draw(const Window *w);
protected:
int index; ///< If non-negative, index in the #Window::nested_array.
Colours colour; ///< Colour of this widget.
int clicked; ///< The currently clicked widget.
int count; ///< Amount of valid widgets.
Scrollbar *sb; ///< The scrollbar we're associated with.
private:
int widget_w; ///< The width of the child widget including inter spacing.
int widget_h; ///< The height of the child widget including inter spacing.
int widgets_x; ///< The number of visible widgets in horizontal direction.
int widgets_y; ///< The number of visible widgets in vertical direction.
void GetScrollOffsets(int &start_x, int &start_y, int &base_offs_x, int &base_offs_y);
};
/**
* Spacer widget.
* @ingroup NestedWidgets
*/
class NWidgetSpacer : public NWidgetResizeBase {
public:
NWidgetSpacer(int length, int height);
void SetupSmallestSize(Window *w, bool init_array);
/* virtual */ void FillNestedArray(NWidgetBase **array, uint length);
/* virtual */ void Draw(const Window *w);
/* virtual */ void SetDirty(const Window *w) const;
/* virtual */ NWidgetCore *GetWidgetFromPos(int x, int y);
};
/**
* Nested widget with a child.
* @ingroup NestedWidgets
*/
class NWidgetBackground : public NWidgetCore {
public:
NWidgetBackground(WidgetType tp, Colours colour, int index, NWidgetPIPContainer *child = NULL);
~NWidgetBackground();
void Add(NWidgetBase *nwid);
void SetPIP(uint8 pip_pre, uint8 pip_inter, uint8 pip_post);
void SetupSmallestSize(Window *w, bool init_array);
void AssignSizePosition(SizingType sizing, uint x, uint y, uint given_width, uint given_height, bool rtl);
/* virtual */ void FillNestedArray(NWidgetBase **array, uint length);
/* virtual */ void Draw(const Window *w);
/* virtual */ NWidgetCore *GetWidgetFromPos(int x, int y);
/* virtual */ NWidgetBase *GetWidgetOfType(WidgetType tp);
private:
NWidgetPIPContainer *child; ///< Child widget.
};
/**
* Nested widget to display a viewport in a window.
* After initializing the nested widget tree, call #InitializeViewport(). After changing the window size,
* call #UpdateViewportCoordinates() eg from Window::OnResize().
* If the #display_flags field contains the #ND_NO_TRANSPARENCY bit, the viewport will disable transparency.
* Shading to grey-scale is controlled with the #ND_SHADE_GREY bit (used for B&W news papers), the #ND_SHADE_DIMMED gives dimmed colours (for colour news papers).
* @todo Class derives from #NWidgetCore, but does not use #colour, #widget_data, or #tool_tip.
* @ingroup NestedWidgets
*/
class NWidgetViewport : public NWidgetCore {
public:
NWidgetViewport(int index);
/* virtual */ void SetupSmallestSize(Window *w, bool init_array);
/* virtual */ void Draw(const Window *w);
void InitializeViewport(Window *w, uint32 follow_flags, ZoomLevel zoom);
void UpdateViewportCoordinates(Window *w);
};
/**
* Scrollbar data structure
*/
class Scrollbar {
private:
const bool is_vertical; ///< Scrollbar has vertical orientation.
uint16 count; ///< Number of elements in the list.
uint16 cap; ///< Number of visible elements of the scroll bar.
uint16 pos; ///< Index of first visible item of the list.
uint16 stepsize; ///< Distance to scroll, when pressing the buttons or using the wheel.
public:
/** Stepping sizes when scrolling */
enum ScrollbarStepping {
SS_RAW, ///< Step in single units.
SS_SMALL, ///< Step in #stepsize units.
SS_BIG, ///< Step in #cap units.
};
Scrollbar(bool is_vertical) : is_vertical(is_vertical), stepsize(1)
{
}
/**
* Gets the number of elements in the list
* @return the number of elements
*/
inline uint16 GetCount() const
{
return this->count;
}
/**
* Gets the number of visible elements of the scrollbar
* @return the number of visible elements
*/
inline uint16 GetCapacity() const
{
return this->cap;
}
/**
* Gets the position of the first visible element in the list
* @return the position of the element
*/
inline uint16 GetPosition() const
{
return this->pos;
}
/**
* Checks whether given current item is visible in the list
* @param item to check
* @return true iff the item is visible
*/
inline bool IsVisible(uint16 item) const
{
return IsInsideBS(item, this->GetPosition(), this->GetCapacity());
}
/**
* Is the scrollbar vertical or not?
* @return True iff the scrollbar is vertical.
*/
inline bool IsVertical() const
{
return this->is_vertical;
}
/**
* Set the distance to scroll when using the buttons or the wheel.
* @param stepsize Scrolling speed.
*/
void SetStepSize(uint16 stepsize)
{
assert(stepsize > 0);
this->stepsize = stepsize;
}
/**
* Sets the number of elements in the list
* @param num the number of elements in the list
* @note updates the position if needed
*/
void SetCount(int num)
{
assert(num >= 0);
assert(num <= MAX_UVALUE(uint16));
this->count = num;
num -= this->cap;
if (num < 0) num = 0;
if (num < this->pos) this->pos = num;
}
/**
* Set the capacity of visible elements.
* @param capacity the new capacity
* @note updates the position if needed
*/
void SetCapacity(int capacity)
{
assert(capacity > 0);
assert(capacity <= MAX_UVALUE(uint16));
this->cap = capacity;
if (this->cap + this->pos > this->count) this->pos = max(0, this->count - this->cap);
}
void SetCapacityFromWidget(Window *w, int widget, int padding = 0);
/**
* Sets the position of the first visible element
* @param position the position of the element
*/
void SetPosition(int position)
{
assert(position >= 0);
assert(this->count <= this->cap ? (position == 0) : (position + this->cap <= this->count));
this->pos = position;
}
/**
* Updates the position of the first visible element by the given amount.
* If the position would be too low or high it will be clamped appropriately
* @param difference the amount of change requested
* @param unit The stepping unit of \a difference
*/
void UpdatePosition(int difference, ScrollbarStepping unit = SS_SMALL)
{
if (difference == 0) return;
switch (unit) {
case SS_SMALL: difference *= this->stepsize; break;
case SS_BIG: difference *= this->cap; break;
default: break;
}
this->SetPosition(Clamp(this->pos + difference, 0, max(this->count - this->cap, 0)));
}
/**
* Scroll towards the given position; if the item is visible nothing
* happens, otherwise it will be shown either at the bottom or top of
* the window depending on where in the list it was.
* @param position the position to scroll towards.
*/
void ScrollTowards(int position)
{
if (position < this->GetPosition()) {
/* scroll up to the item */
this->SetPosition(position);
} else if (position >= this->GetPosition() + this->GetCapacity()) {
/* scroll down so that the item is at the bottom */
this->SetPosition(position - this->GetCapacity() + 1);
}
}
int GetScrolledRowFromWidget(int clickpos, const Window * const w, int widget, int padding = 0, int line_height = -1) const;
};
/**
* Nested widget to display and control a scrollbar in a window.
* Also assign the scrollbar to other widgets using #SetScrollbar() to make the mousewheel work.
* @ingroup NestedWidgets
*/
class NWidgetScrollbar : public NWidgetCore, public Scrollbar {
public:
NWidgetScrollbar(WidgetType tp, Colours colour, int index);
/* virtual */ void SetupSmallestSize(Window *w, bool init_array);
/* virtual */ void Draw(const Window *w);
static void InvalidateDimensionCache();
static Dimension GetVerticalDimension();
static Dimension GetHorizontalDimension();
private:
static Dimension vertical_dimension; ///< Cached size of vertical scrollbar button.
static Dimension horizontal_dimension; ///< Cached size of horizontal scrollbar button.
};
/**
* Leaf widget.
* @ingroup NestedWidgets
*/
class NWidgetLeaf : public NWidgetCore {
public:
NWidgetLeaf(WidgetType tp, Colours colour, int index, uint16 data, StringID tip);
/* virtual */ void SetupSmallestSize(Window *w, bool init_array);
/* virtual */ void Draw(const Window *w);
bool ButtonHit(const Point &pt);
static void InvalidateDimensionCache();
private:
static Dimension shadebox_dimension; ///< Cached size of a shadebox widget.
static Dimension debugbox_dimension; ///< Cached size of a debugbox widget.
static Dimension defsizebox_dimension; ///< Cached size of a defsizebox widget.
static Dimension stickybox_dimension; ///< Cached size of a stickybox widget.
static Dimension resizebox_dimension; ///< Cached size of a resizebox widget.
static Dimension closebox_dimension; ///< Cached size of a closebox widget.
};
/**
* Return the biggest possible size of a nested widget.
* @param base Base size of the widget.
* @param max_space Available space for the widget.
* @param step Stepsize of the widget.
* @return Biggest possible size of the widget, assuming that \a base may only be incremented by \a step size steps.
*/
static inline uint ComputeMaxSize(uint base, uint max_space, uint step)
{
if (base >= max_space || step == 0) return base;
if (step == 1) return max_space;
uint increment = max_space - base;
increment -= increment % step;
return base + increment;
}
/**
* @defgroup NestedWidgetParts Hierarchical widget parts
* To make nested widgets easier to enter, nested widget parts have been created. They allow the tree to be defined in a flat array of parts.
*
* - Leaf widgets start with a #NWidget(WidgetType tp, Colours col, int16 idx) part.
* Next, specify its properties with one or more of
* - #SetMinimalSize Define the minimal size of the widget.
* - #SetFill Define how the widget may grow to make it nicely.
* - #SetDataTip Define the data and the tooltip of the widget.
* - #SetResize Define how the widget may resize.
* - #SetPadding Create additional space around the widget.
*
* - To insert a nested widget tree from an external source, nested widget part #NWidgetFunction exists.
* For further customization, the #SetPadding part may be used.
*
* - Space widgets (#NWidgetSpacer) start with a #NWidget(WidgetType tp), followed by one or more of
* - #SetMinimalSize Define the minimal size of the widget.
* - #SetFill Define how the widget may grow to make it nicely.
* - #SetResize Define how the widget may resize.
* - #SetPadding Create additional space around the widget.
*
* - Container widgets #NWidgetHorizontal, #NWidgetHorizontalLTR, #NWidgetVertical, and #NWidgetMatrix, start with a #NWidget(WidgetType tp) part.
* Their properties are derived from the child widgets so they cannot be specified.
* You can however use
* - #SetPadding Define additional padding around the container.
* - #SetPIP Set additional pre/inter/post child widget space.
* .
* Underneath these properties, all child widgets of the container must be defined. To denote that they are childs, add an indent before the nested widget parts of
* the child widgets (it has no meaning for the compiler but it makes the widget parts easier to read).
* Below the last child widget, use an #EndContainer part. This part should be aligned with the #NWidget part that started the container.
*
* - Stacked widgets #NWidgetStacked map each of their children onto the same space. It behaves like a container, except there is no pre/inter/post space,
* so the widget does not support #SetPIP. #SetPadding is allowed though.
* Like the other container widgets, below the last child widgets, a #EndContainer part should be used to denote the end of the stacked widget.
*
* - Background widgets #NWidgetBackground start with a #NWidget(WidgetType tp, Colours col, int16 idx) part.
* What follows depends on how the widget is used.
* - If the widget is used as a leaf widget, that is, to create some space in the window to display a viewport or some text, use the properties of the
* leaf widgets to define how it behaves.
* - If the widget is used a background behind other widgets, it is considered to be a container widgets. Use the properties listed there to define its
* behaviour.
* .
* In both cases, the background widget \b MUST end with a #EndContainer widget part.
*
* @see NestedWidgets
*/
/**
* Widget part for storing data and tooltip information.
* @ingroup NestedWidgetParts
*/
struct NWidgetPartDataTip {
uint16 data; ///< Data value of the widget.
StringID tooltip; ///< Tooltip of the widget.
};
/**
* Widget part for storing basic widget information.
* @ingroup NestedWidgetParts
*/
struct NWidgetPartWidget {
Colours colour; ///< Widget colour.
int16 index; ///< Widget index in the widget array.
};
/**
* Widget part for storing padding.
* @ingroup NestedWidgetParts
*/
struct NWidgetPartPaddings {
uint8 top, right, bottom, left; ///< Paddings for all directions.
};
/**
* Widget part for storing pre/inter/post spaces.
* @ingroup NestedWidgetParts
*/
struct NWidgetPartPIP {
uint8 pre, inter, post; ///< Amount of space before/between/after child widgets.
};
/**
* Widget part for storing minimal text line data.
* @ingroup NestedWidgetParts
*/
struct NWidgetPartTextLines {
uint8 lines; ///< Number of text lines.
uint8 spacing; ///< Extra spacing around lines.
FontSize size; ///< Font size of text lines.
};
/**
* Pointer to function returning a nested widget.
* @param biggest_index Pointer to storage for collecting the biggest index used in the nested widget.
* @return Nested widget (tree).
* @post \c *biggest_index must contain the value of the biggest index in the returned tree.
*/
typedef NWidgetBase *NWidgetFunctionType(int *biggest_index);
/**
* Partial widget specification to allow NWidgets to be written nested.
* @ingroup NestedWidgetParts
*/
struct NWidgetPart {
WidgetType type; ///< Type of the part. @see NWidgetPartType.
union {
Point xy; ///< Part with an x/y size.
NWidgetPartDataTip data_tip; ///< Part with a data/tooltip.
NWidgetPartWidget widget; ///< Part with a start of a widget.
NWidgetPartPaddings padding; ///< Part with paddings.
NWidgetPartPIP pip; ///< Part with pre/inter/post spaces.
NWidgetPartTextLines text_lines; ///< Part with text line data.
NWidgetFunctionType *func_ptr; ///< Part with a function call.
NWidContainerFlags cont_flags; ///< Part with container flags.
} u;
};
/**
* Widget part function for setting the resize step.
* @param dx Horizontal resize step. 0 means no horizontal resizing.
* @param dy Vertical resize step. 0 means no vertical resizing.
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart SetResize(int16 dx, int16 dy)
{
NWidgetPart part;
part.type = WPT_RESIZE;
part.u.xy.x = dx;
part.u.xy.y = dy;
return part;
}
/**
* Widget part function for setting the minimal size.
* @param x Horizontal minimal size.
* @param y Vertical minimal size.
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart SetMinimalSize(int16 x, int16 y)
{
NWidgetPart part;
part.type = WPT_MINSIZE;
part.u.xy.x = x;
part.u.xy.y = y;
return part;
}
/**
* Widget part function for setting the minimal text lines.
* @param lines Number of text lines.
* @param spacing Extra spacing required.
* @param size Font size of text.
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart SetMinimalTextLines(uint8 lines, uint8 spacing, FontSize size = FS_NORMAL)
{
NWidgetPart part;
part.type = WPT_MINTEXTLINES;
part.u.text_lines.lines = lines;
part.u.text_lines.spacing = spacing;
part.u.text_lines.size = size;
return part;
}
/**
* Widget part function for setting filling.
* @param fill_x Horizontal filling step from minimal size.
* @param fill_y Vertical filling step from minimal size.
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart SetFill(uint fill_x, uint fill_y)
{
NWidgetPart part;
part.type = WPT_FILL;
part.u.xy.x = fill_x;
part.u.xy.y = fill_y;
return part;
}
/**
* Widget part function for denoting the end of a container
* (horizontal, vertical, WWT_FRAME, WWT_INSET, or WWT_PANEL).
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart EndContainer()
{
NWidgetPart part;
part.type = WPT_ENDCONTAINER;
return part;
}
/**
* Widget part function for setting the data and tooltip.
* @param data Data of the widget.
* @param tip Tooltip of the widget.
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart SetDataTip(uint16 data, StringID tip)
{
NWidgetPart part;
part.type = WPT_DATATIP;
part.u.data_tip.data = data;
part.u.data_tip.tooltip = tip;
return part;
}
/**
* Widget part function for setting additional space around a widget.
* Parameters start above the widget, and are specified in clock-wise direction.
* @param top The padding above the widget.
* @param right The padding right of the widget.
* @param bottom The padding below the widget.
* @param left The padding left of the widget.
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart SetPadding(uint8 top, uint8 right, uint8 bottom, uint8 left)
{
NWidgetPart part;
part.type = WPT_PADDING;
part.u.padding.top = top;
part.u.padding.right = right;
part.u.padding.bottom = bottom;
part.u.padding.left = left;
return part;
}
/**
* Widget part function for setting a padding.
* @param padding The padding to use for all directions.
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart SetPadding(uint8 padding)
{
return SetPadding(padding, padding, padding, padding);
}
/**
* Widget part function for setting a pre/inter/post spaces.
* @param pre The amount of space before the first widget.
* @param inter The amount of space between widgets.
* @param post The amount of space after the last widget.
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart SetPIP(uint8 pre, uint8 inter, uint8 post)
{
NWidgetPart part;
part.type = WPT_PIPSPACE;
part.u.pip.pre = pre;
part.u.pip.inter = inter;
part.u.pip.post = post;
return part;
}
/**
* Attach a scrollbar to a widget.
* The scrollbar is controlled when using the mousewheel on the widget.
* Multiple widgets can refer to the same scrollbar to make the mousewheel work in all of them.
* @param index Widget index of the scrollbar.
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart SetScrollbar(int index)
{
NWidgetPart part;
part.type = WPT_SCROLLBAR;
part.u.widget.index = index;
return part;
}
/**
* Widget part function for starting a new 'real' widget.
* @param tp Type of the new nested widget.
* @param col Colour of the new widget.
* @param idx Index of the widget in the widget array.
* @note with #WWT_PANEL, #WWT_FRAME, #WWT_INSET, a new container is started.
* Child widgets must have a index bigger than the parent index.
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart NWidget(WidgetType tp, Colours col, int16 idx = -1)
{
NWidgetPart part;
part.type = tp;
part.u.widget.colour = col;
part.u.widget.index = idx;
return part;
}
/**
* Widget part function for starting a new horizontal container, vertical container, or spacer widget.
* @param tp Type of the new nested widget, #NWID_HORIZONTAL(_LTR), #NWID_VERTICAL, #NWID_SPACER, #NWID_SELECTION, and #NWID_MATRIX.
* @param cont_flags Flags for the containers (#NWID_HORIZONTAL(_LTR) and #NWID_VERTICAL).
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart NWidget(WidgetType tp, NWidContainerFlags cont_flags = NC_NONE)
{
NWidgetPart part;
part.type = tp;
part.u.cont_flags = cont_flags;
return part;
}
/**
* Obtain a nested widget (sub)tree from an external source.
* @param func_ptr Pointer to function that returns the tree.
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart NWidgetFunction(NWidgetFunctionType *func_ptr)
{
NWidgetPart part;
part.type = WPT_FUNCTION;
part.u.func_ptr = func_ptr;
return part;
}
NWidgetContainer *MakeNWidgets(const NWidgetPart *parts, int count, int *biggest_index, NWidgetContainer *container);
NWidgetContainer *MakeWindowNWidgetTree(const NWidgetPart *parts, int count, int *biggest_index, NWidgetStacked **shade_select);
NWidgetBase *MakeCompanyButtonRows(int *biggest_index, int widget_first, int widget_last, int max_length, StringID button_tooltip);
#endif /* WIDGET_TYPE_H */
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