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Nested widget to display a viewport in a window. More...
#include <widget_type.h>
 
  
 | Public Member Functions | |
| NWidgetViewport (int index) | |
| void | SetupSmallestSize (Window *w, bool init_array) | 
| Compute smallest size needed by the widget. | |
| void | Draw (const Window *w) | 
| Draw the widgets of the tree. | |
| void | InitializeViewport (Window *w, uint32 follow_flags, ZoomLevel zoom) | 
| Initialize the viewport of the window. | |
| void | UpdateViewportCoordinates (Window *w) | 
| Update the position and size of the viewport (after eg a resize). | |
|  Public Member Functions inherited from NWidgetCore | |
| NWidgetCore (WidgetType tp, Colours colour, uint fill_x, uint fill_y, uint32 widget_data, StringID tool_tip) | |
| Initialization of a 'real' widget. | |
| void | SetIndex (int index) | 
| Set index of the nested widget in the widget array. | |
| void | SetDataTip (uint32 widget_data, StringID tool_tip) | 
| Set data and tool tip of the nested widget. | |
| void | SetLowered (bool lowered) | 
| Lower or raise the widget. | |
| bool | IsLowered () const | 
| Return whether the widget is lowered. | |
| void | SetDisabled (bool disabled) | 
| Disable (grey-out) or enable the widget. | |
| bool | IsDisabled () const | 
| Return whether the widget is disabled. | |
| void | FillNestedArray (NWidgetBase **array, uint length) | 
| NWidgetCore * | GetWidgetFromPos (int x, int y) | 
| Retrieve a widget by its position. | |
| bool | IsHighlighted () const | 
| Return whether the widget is highlighted. | |
| TextColour | GetHighlightColour () const | 
| Return the colour of the highlight. | |
| void | SetHighlighted (TextColour highlight_colour) | 
| Highlight the widget or not. | |
|  Public Member Functions inherited from NWidgetResizeBase | |
| NWidgetResizeBase (WidgetType tp, uint fill_x, uint fill_y) | |
| Constructor for resizable nested widgets. | |
| void | SetMinimalSize (uint min_x, uint min_y) | 
| Set minimal size of the widget. | |
| void | SetMinimalTextLines (uint8 min_lines, uint8 spacing, FontSize size) | 
| Set minimal text lines for the widget. | |
| void | SetFill (uint fill_x, uint fill_y) | 
| Set the filling of the widget from initial size. | |
| void | SetResize (uint resize_x, uint resize_y) | 
| Set resize step of the widget. | |
| void | AssignSizePosition (SizingType sizing, uint x, uint y, uint given_width, uint given_height, bool rtl) | 
| Assign size and position to the widget. | |
|  Public Member Functions inherited from NWidgetBase | |
| NWidgetBase (WidgetType tp) | |
| Base class constructor. | |
| virtual NWidgetBase * | GetWidgetOfType (WidgetType tp) | 
| Retrieve a widget by its type. | |
| void | SetPadding (uint8 top, uint8 right, uint8 bottom, uint8 left) | 
| Set additional space (padding) around the widget. | |
| uint | GetHorizontalStepSize (SizingType sizing) const | 
| Get the horizontal sizing step. | |
| uint | GetVerticalStepSize (SizingType sizing) const | 
| Get the vertical sizing step. | |
| virtual void | SetDirty (const Window *w) const | 
| Mark the widget as 'dirty' (in need of repaint). | |
|  Public Member Functions inherited from ZeroedMemoryAllocator | |
| void * | operator new (size_t size) | 
| Memory allocator for a single class instance. | |
| void * | operator new[] (size_t size) | 
| Memory allocator for an array of class instances. | |
| void | operator delete (void *ptr) | 
| Memory release for a single class instance. | |
| void | operator delete[] (void *ptr) | 
| Memory release for an array of class instances. | |
| Additional Inherited Members | |
|  Data Fields inherited from NWidgetCore | |
| 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 ( -1means 'not used'). | |
| uint32 | widget_data | 
| Data of the widget. | |
| StringID | tool_tip | 
| Tooltip of the widget. | |
| int | scrollbar_index | 
| Index of an attached scrollbar. | |
| TextColour | highlight_colour | 
| Colour of highlight. | |
|  Protected Member Functions inherited from NWidgetBase | |
| void | StoreSizePosition (SizingType sizing, uint x, uint y, uint given_width, uint given_height) | 
| Store size and position. | |
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).
Definition at line 575 of file widget_type.h.
| 
 | virtual | 
Draw the widgets of the tree.
The function calls Window::DrawWidget for each widget with a non-negative index, after the widget itself is painted.
| w | Window that owns the tree. | 
Implements NWidgetBase.
Definition at line 1902 of file widget.cpp.
References _transparency_opt, NWidgetBase::current_x, NWidgetBase::current_y, NWidgetCore::disp_flags, Window::DrawViewport(), FILLRECT_RECOLOUR, GfxFillRect(), ND_NO_TRANSPARENCY, ND_SHADE_DIMMED, ND_SHADE_GREY, PALETTE_NEWSPAPER, PALETTE_TO_TRANSPARENT, NWidgetBase::pos_x, NWidgetBase::pos_y, TO_LOADING, and TO_SIGNS.
Initialize the viewport of the window.
| w | Window owning the viewport. | 
| follow_flags | Type of viewport, see InitializeWindowViewport(). | 
| zoom | Zoom level. | 
Definition at line 1926 of file widget.cpp.
References NWidgetBase::current_x, NWidgetBase::current_y, InitializeWindowViewport(), NWidgetBase::pos_x, and NWidgetBase::pos_y.
Referenced by WaypointWindow::WaypointWindow().
| 
 | virtual | 
Compute smallest size needed by the widget.
The smallest size of a widget is the smallest size that a widget needs to display itself properly. In addition, filling and resizing of the widget are computed. The function calls Window::UpdateWidgetSize for each leaf widget and background widget without child with a non-negative index.
| w | Window owning the widget. | 
| init_array | Initialize the w->nested_array. | 
Implements NWidgetBase.
Definition at line 1892 of file widget.cpp.
References NWidgetCore::index, NWidgetResizeBase::min_x, NWidgetResizeBase::min_y, Window::nested_array, Window::nested_array_size, NWidgetBase::smallest_x, and NWidgetBase::smallest_y.
| void NWidgetViewport::UpdateViewportCoordinates | ( | Window * | w | ) | 
Update the position and size of the viewport (after eg a resize).
| w | Window owning the viewport. | 
Definition at line 1935 of file widget.cpp.
References NWidgetBase::current_x, NWidgetBase::current_y, ViewPort::height, ViewPort::left, Window::left, NWidgetBase::pos_x, NWidgetBase::pos_y, ScaleByZoom(), ViewPort::top, Window::top, Window::viewport, ViewPort::virtual_height, ViewPort::virtual_width, ViewPort::width, and ViewPort::zoom.
Referenced by ExtraViewportWindow::OnResize(), WaypointWindow::OnResize(), MainWindow::OnResize(), TownViewWindow::OnResize(), IndustryViewWindow::OnResize(), and VehicleViewWindow::OnResize().
 1.8.1.2
 1.8.1.2