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-rw-r--r--src/widget.cpp102
-rw-r--r--src/widget_type.h44
2 files changed, 131 insertions, 15 deletions
diff --git a/src/widget.cpp b/src/widget.cpp
index e47e942c7..ab8011825 100644
--- a/src/widget.cpp
+++ b/src/widget.cpp
@@ -669,6 +669,7 @@ void Window::DrawSortButtonState(int widget, SortButtonState state) const
* never swap order.
* - #NWidgetVertical for organizing child widgets underneath each other.
* - #NWidgetBackground for adding a background behind its child widget.
+ * - #NWidgetStacked for stacking child widgets on top of each other.
*
* @see NestedWidgetParts
*/
@@ -896,6 +897,86 @@ void NWidgetContainer::Add(NWidgetBase *wid)
}
/**
+ * Widgets stacked on top of each other.
+ * @param tp Kind of stacking, must be either #NWID_SELECTION or #NWID_LAYERED.
+ */
+NWidgetStacked::NWidgetStacked(WidgetType tp) : NWidgetContainer(tp)
+{
+}
+
+int NWidgetStacked::ComputeMinimalSize()
+{
+ /* First sweep, recurse down and compute minimal size and filling. */
+ int biggest_index = -1;
+ this->min_x = 0;
+ this->min_y = 0;
+ this->fill_x = (this->head != NULL);
+ this->fill_y = (this->head != NULL);
+ this->resize_x = (this->head != NULL) ? 1 : 0;
+ this->resize_y = (this->head != NULL) ? 1 : 0;
+ for (NWidgetBase *child_wid = this->head; child_wid != NULL; child_wid = child_wid->next) {
+ int idx = child_wid->ComputeMinimalSize();
+ biggest_index = max(biggest_index, idx);
+
+ this->min_x = max(this->min_x, child_wid->min_x + child_wid->padding_left + child_wid->padding_right);
+ this->min_y = max(this->min_y, child_wid->min_y + child_wid->padding_top + child_wid->padding_bottom);
+ this->fill_x &= child_wid->fill_x;
+ this->fill_y &= child_wid->fill_y;
+ this->resize_x = LeastCommonMultiple(this->resize_x, child_wid->resize_x);
+ this->resize_y = LeastCommonMultiple(this->resize_y, child_wid->resize_y);
+ }
+ return biggest_index;
+}
+
+void NWidgetStacked::AssignMinimalPosition(uint x, uint y, uint given_width, uint given_height, bool allow_resize_x, bool allow_resize_y, bool rtl)
+{
+ assert(given_width >= this->min_x && given_height >= this->min_y);
+
+ this->pos_x = x;
+ this->pos_y = y;
+ this->min_x = given_width;
+ this->min_y = given_height;
+ if (!allow_resize_x) this->resize_x = 0;
+ if (!allow_resize_y) this->resize_y = 0;
+
+ for (NWidgetBase *child_wid = this->head; child_wid != NULL; child_wid = child_wid->next) {
+ /* Decide about horizontal position and filling of the child. */
+ uint child_width;
+ int child_pos_x;
+ if (child_wid->fill_x) {
+ child_width = given_width - child_wid->padding_left - child_wid->padding_right;
+ child_pos_x = (rtl ? child_wid->padding_right : child_wid->padding_left);
+ } else {
+ child_width = child_wid->min_x;
+ child_pos_x = (given_width - child_wid->padding_left - child_wid->padding_right - child_width) / 2 + (rtl ? child_wid->padding_right : child_wid->padding_left);
+ }
+
+ /* Decide about vertical position and filling of the child. */
+ uint child_height;
+ int child_pos_y;
+ if (child_wid->fill_y) {
+ child_height = given_height - child_wid->padding_top - child_wid->padding_bottom;
+ child_pos_y = 0;
+ } else {
+ child_height = child_wid->min_y;
+ child_pos_y = (given_height - child_wid->padding_top - child_wid->padding_bottom - child_height) / 2;
+ }
+ child_wid->AssignMinimalPosition(x + child_pos_x, y + child_pos_y, child_width, child_height, (this->resize_x > 0), (this->resize_y > 0), rtl);
+ }
+}
+
+void NWidgetStacked::StoreWidgets(Widget *widgets, int length, bool left_moving, bool top_moving, bool rtl)
+{
+ for (NWidgetBase *child_wid = this->head; child_wid != NULL; child_wid = child_wid->next) {
+ child_wid->StoreWidgets(widgets, length, left_moving, top_moving, rtl);
+ }
+}
+
+NWidgetPIPContainer::NWidgetPIPContainer(WidgetType tp) : NWidgetContainer(tp)
+{
+}
+
+/**
* Set additional pre/inter/post space for the container.
*
* @param pip_pre Additional space in front of the first child widget (above
@@ -904,7 +985,7 @@ void NWidgetContainer::Add(NWidgetBase *wid)
* @param pip_post Additional space after the last child widget (below for the
* vertical container, at the right for the horizontal container).
*/
-void NWidgetContainer::SetPIP(uint8 pip_pre, uint8 pip_inter, uint8 pip_post)
+void NWidgetPIPContainer::SetPIP(uint8 pip_pre, uint8 pip_inter, uint8 pip_post)
{
this->pip_pre = pip_pre;
this->pip_inter = pip_inter;
@@ -912,7 +993,7 @@ void NWidgetContainer::SetPIP(uint8 pip_pre, uint8 pip_inter, uint8 pip_post)
}
/** Horizontal container widget. */
-NWidgetHorizontal::NWidgetHorizontal() : NWidgetContainer(NWID_HORIZONTAL)
+NWidgetHorizontal::NWidgetHorizontal() : NWidgetPIPContainer(NWID_HORIZONTAL)
{
}
@@ -1037,7 +1118,7 @@ void NWidgetHorizontalLTR::StoreWidgets(Widget *widgets, int length, bool left_m
}
/** Vertical container widget. */
-NWidgetVertical::NWidgetVertical() : NWidgetContainer(NWID_VERTICAL)
+NWidgetVertical::NWidgetVertical() : NWidgetPIPContainer(NWID_VERTICAL)
{
}
@@ -1169,7 +1250,7 @@ void NWidgetSpacer::StoreWidgets(Widget *widgets, int length, bool left_moving,
* vertical container will be inserted while adding the first
* child widget.
*/
-NWidgetBackground::NWidgetBackground(WidgetType tp, Colours colour, int index, NWidgetContainer *child) : NWidgetCore(tp, colour, true, true, 0x0, STR_NULL)
+NWidgetBackground::NWidgetBackground(WidgetType tp, Colours colour, int index, NWidgetPIPContainer *child) : NWidgetCore(tp, colour, true, true, 0x0, STR_NULL)
{
this->SetIndex(index);
assert(tp == WWT_PANEL || tp == WWT_INSET || tp == WWT_FRAME);
@@ -1487,6 +1568,14 @@ static int MakeNWidget(const NWidgetPart *parts, int count, NWidgetBase **dest,
*fill_dest = false;
break;
+ case NWID_SELECTION:
+ case NWID_LAYERED:
+ if (*dest != NULL) return num_used;
+ *dest = new NWidgetStacked(parts->type);
+ *fill_dest = true;
+ break;
+
+
case WPT_RESIZE: {
NWidgetResizeBase *nwrb = dynamic_cast<NWidgetResizeBase *>(*dest);
if (nwrb != NULL) {
@@ -1559,7 +1648,7 @@ static int MakeNWidget(const NWidgetPart *parts, int count, NWidgetBase **dest,
}
case WPT_PIPSPACE: {
- NWidgetContainer *nwc = dynamic_cast<NWidgetContainer *>(*dest);
+ NWidgetPIPContainer *nwc = dynamic_cast<NWidgetPIPContainer *>(*dest);
if (nwc != NULL) nwc->SetPIP(parts->u.pip.pre, parts->u.pip.inter, parts->u.pip.post);
NWidgetBackground *nwb = dynamic_cast<NWidgetBackground *>(*dest);
@@ -1614,7 +1703,8 @@ static int MakeWidgetTree(const NWidgetPart *parts, int count, NWidgetBase *pare
/* If sub-widget is a container, recursively fill that container. */
WidgetType tp = sub_widget->type;
- if (fill_sub && (tp == NWID_HORIZONTAL || tp == NWID_HORIZONTAL_LTR || tp == NWID_VERTICAL || tp == WWT_PANEL || tp == WWT_FRAME || tp == WWT_INSET)) {
+ if (fill_sub && (tp == NWID_HORIZONTAL || tp == NWID_HORIZONTAL_LTR || tp == NWID_VERTICAL
+ || tp == WWT_PANEL || tp == WWT_FRAME || tp == WWT_INSET || tp == NWID_SELECTION || tp == NWID_LAYERED)) {
int num_used = MakeWidgetTree(parts, count - total_used, sub_widget);
parts += num_used;
total_used += num_used;
diff --git a/src/widget_type.h b/src/widget_type.h
index 0a7772163..0128d510d 100644
--- a/src/widget_type.h
+++ b/src/widget_type.h
@@ -100,6 +100,8 @@ enum WidgetType {
NWID_HORIZONTAL_LTR, ///< Horizontal container that doesn't change the order of the widgets for RTL languages.
NWID_VERTICAL, ///< Vertical 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_LAYERED, ///< Widgets layered on top of each other, all visible at the same time.
/* Nested widget part types. */
WPT_RESIZE, ///< Widget part for specifying resizing.
@@ -214,23 +216,43 @@ public:
~NWidgetContainer();
void Add(NWidgetBase *wid);
- void SetPIP(uint8 pip_pre, uint8 pip_inter, uint8 pip_post);
/** Return whether the container is empty. */
inline bool IsEmpty() { return head == NULL; };
protected:
+ NWidgetBase *head; ///< Pointer to first widget in container.
+ NWidgetBase *tail; ///< Pointer to last widget in container.
+};
+
+/** Stacked widgets, widgets all occupying the same space in the window.
+ * @note the semantics difference between #NWID_SELECTION and #NWID_LAYERED is currently not used.
+ */
+class NWidgetStacked : public NWidgetContainer {
+public:
+ NWidgetStacked(WidgetType tp);
+
+ int ComputeMinimalSize();
+ void AssignMinimalPosition(uint x, uint y, uint given_width, uint given_height, bool allow_resize_x, bool allow_resize_y, bool rtl);
+ void StoreWidgets(Widget *widgets, int length, bool left_moving, bool top_moving, bool rtl);
+};
+
+/** Container with pre/inter/post child space. */
+class NWidgetPIPContainer : public NWidgetContainer {
+public:
+ NWidgetPIPContainer(WidgetType tp);
+
+ void SetPIP(uint8 pip_pre, uint8 pip_inter, uint8 pip_post);
+
+protected:
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.
-
- NWidgetBase *head; ///< Pointer to first widget in container.
- NWidgetBase *tail; ///< Pointer to last widget in container.
};
/** Horizontal container.
* @ingroup NestedWidgets */
-class NWidgetHorizontal : public NWidgetContainer {
+class NWidgetHorizontal : public NWidgetPIPContainer {
public:
NWidgetHorizontal();
@@ -253,7 +275,7 @@ public:
/** Vertical container.
* @ingroup NestedWidgets */
-class NWidgetVertical : public NWidgetContainer {
+class NWidgetVertical : public NWidgetPIPContainer {
public:
NWidgetVertical();
@@ -278,7 +300,7 @@ public:
* @ingroup NestedWidgets */
class NWidgetBackground : public NWidgetCore {
public:
- NWidgetBackground(WidgetType tp, Colours colour, int index, NWidgetContainer *child = NULL);
+ NWidgetBackground(WidgetType tp, Colours colour, int index, NWidgetPIPContainer *child = NULL);
~NWidgetBackground();
void Add(NWidgetBase *nwid);
@@ -289,7 +311,7 @@ public:
void StoreWidgets(Widget *widgets, int length, bool left_moving, bool top_moving, bool rtl);
private:
- NWidgetContainer *child; ///< Child widget.
+ NWidgetPIPContainer *child; ///< Child widget.
};
/** Leaf widget.
@@ -333,6 +355,10 @@ bool CompareWidgetArrays(const Widget *orig, const Widget *gen, bool report = tr
* 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 childs 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
@@ -589,7 +615,7 @@ static inline NWidgetPart NWidget(WidgetType tp, Colours col, int16 idx)
/**
* 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, or #NWID_SPACER
+ * @param tp Type of the new nested widget, #NWID_HORIZONTAL(_LTR), #NWID_VERTICAL, #NWID_SPACER, #NWID_SELECTION, or #NWID_LAYERED.
* @ingroup NestedWidgetParts
*/
static inline NWidgetPart NWidget(WidgetType tp)
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-17 17:45:50 +0000