*/
#include <common.h>
#include <wm_renderer.h>
+#include <renderer_widget.h>
+#include <string.h>
// === TYPES ===
typedef struct sWidgetWin tWidgetWin;
+typedef struct sAxWin_Element tElement;
// === STRUCTURES ===
+struct sAxWin_Element
+{
+ enum eElementTypes Type;
+
+ uint32_t ID; //!< Application provided ID number
+ tElement *ListNext; //!< Next element in bucket
+
+ // Element Tree
+ tElement *Parent;
+ tElement *FirstChild;
+ tElement *LastChild;
+ tElement *NextSibling;
+
+ // User modifiable attributes
+ short PaddingL, PaddingR;
+ short PaddingT, PaddingB;
+ short GapSize;
+
+ uint32_t Flags;
+
+ short FixedWith; //!< Fixed lengthways Size attribute (height)
+ short FixedCross; //!< Fixed Cross Size attribute (width)
+
+ char *Text;
+
+ // -- Attributes maitained by the element code
+ // Not touched by the user
+ short MinWith; //!< Minimum long size
+ short MinCross; //!< Minimum cross size
+ void *Data; //!< Per-type data
+
+ // -- Render Cache
+ short CachedX, CachedY;
+ short CachedW, CachedH;
+
+ char DebugName[];
+};
struct sWidgetWin
{
tElement RootElement;
+
+ int TableSize; //!< Number of entries, anything over will wrap
+ tElement *ElementTable[]; //!< Hash table essentially
};
// === PROTOTYPES ===
-tWindow *Renderer_Widget_Create(int Width, int Height, int Flags);
+tWindow *Renderer_Widget_Create(int Flags);
void Renderer_Widget_Redraw(tWindow *Window);
int Renderer_Widget_HandleMessage(tWindow *Target, int Msg, int Len, void *Data);
return 0;
}
-tWindow *Renderer_Widget_Create(int Width, int Height, int Flags)
+tWindow *Renderer_Widget_Create(int Flags)
{
// TODO: Add info
return WM_CreateWindowStruct( sizeof(tWidgetWin) );
{
}
+// --- Render / Resize ---
+void Widget_UpdateDimensions(tElement *Element)
+{
+ tElement *child;
+ int nChildren = 0;
+ int nFixed = 0;
+ int maxCross = 0;
+ int fixedSize = 0;
+ int fullCross, dynWith;
+
+ // Pass 1
+ // - Get the fixed and minimum sizes of the element
+ for( child = Element->FirstChild; child; child = child->NextSibling )
+ {
+ // Ignore elements that will not be rendered
+ if( child->Flags & ELEFLAG_NORENDER ) continue ;
+
+ // Absolutely positioned elements don't affect dimensions
+ if( child->Flags & ELEFLAG_ABSOLUTEPOS ) continue ;
+
+ // Fixed width elements
+ if( child->FixedWith )
+ {
+ nFixed ++;
+ fixedSize += child->FixedWith;
+ }
+
+ if( child->FixedCross && maxCross < child->FixedCross )
+ maxCross = child->FixedCross;
+ if( child->MinCross && maxCross < child->MinCross )
+ maxCross = child->MinCross;
+ nChildren ++;
+ }
+
+ // Get the dynamic with size from the unused space in the element
+ if( nChildren > nFixed ) {
+ if( Element->Flags & ELEFLAG_VERTICAL )
+ dynWith = Element->CachedH - Element->PaddingT - Element->PaddingB;
+ else
+ dynWith = Element->CachedW - Element->PaddingL - Element->PaddingR;
+ dynWith -= fixedSize;
+ if( dynWith < 0 ) return ;
+ dynWith /= nChildren - nFixed;
+ }
+
+ // Get the cross size
+ if( Element->Flags & ELEFLAG_VERTICAL )
+ fullCross = Element->CachedW - Element->PaddingL - Element->PaddingR;
+ else
+ fullCross = Element->CachedH - Element->PaddingT - Element->PaddingB;
+
+ // Pass 2 - Set sizes and recurse
+ for( child = Element->FirstChild; child; child = child->NextSibling )
+ {
+ int cross, with;
+
+ // Ignore elements that will not be rendered
+ if( child->Flags & ELEFLAG_NORENDER ) continue ;
+
+ // --- Cross Size ---
+ // TODO: Expand to fill?
+ // TODO: Extra flag so options are (Expand, Equal, Wrap)
+ if( child->FixedCross )
+ cross = child->FixedCross;
+ else if( child->Flags & ELEFLAG_NOEXPAND )
+ cross = child->MinCross;
+ else
+ cross = fullCross;
+
+ // --- With Size ---
+ if( child->FixedWith)
+ with = child->FixedWith;
+ else if( child->Flags & ELEFLAG_NOSTRETCH )
+ with = child->MinWith;
+ else
+ with = dynWith;
+
+
+ // Update the dimensions if they have changed
+ if( Element->Flags & ELEFLAG_VERTICAL ) {
+ // If no change, don't recurse
+ if( child->CachedW == cross && child->CachedH == with )
+ continue ;
+ child->CachedW = cross;
+ child->CachedH = with;
+ }
+ else {
+ // If no change, don't recurse
+ if( child->CachedW == with && child->CachedH == cross )
+ continue ;
+ child->CachedW = with;
+ child->CachedH = cross;
+ }
+
+ // Force the positions of child elements to be recalculated
+ child->CachedX = -1;
+
+ // Recurse down so the child elements can be updated
+ Widget_UpdateDimensions(child);
+ }
+
+}
+
+/**
+ * \brief Update the position of child elements
+ */
+void Widget_UpdatePosition(tElement *Element)
+{
+ tElement *child;
+ int x, y;
+
+ if( Element->Flags & ELEFLAG_NORENDER ) return ;
+
+ // Initialise
+ x = Element->CachedX + Element->PaddingL;
+ y = Element->CachedY + Element->PaddingT;
+
+ // Update each child
+ for(child = Element->FirstChild; child; child = child->NextSibling)
+ {
+ int newX, newY;
+ // Ignore elements that will not be rendered
+ if( child->Flags & ELEFLAG_NORENDER ) continue ;
+
+ newX = x; newY = y;
+
+ // Handle alignment
+ if( Element->Flags & ELEFLAG_ALIGN_CENTER ) {
+ if(Element->Flags & ELEFLAG_VERTICAL)
+ newX += Element->CachedW/2 - child->CachedW/2;
+ else
+ newY += Element->CachedH/2 - child->CachedH/2;
+ }
+ else if( Element->Flags & ELEFLAG_ALIGN_END ) {
+ if(Element->Flags & ELEFLAG_VERTICAL )
+ newX += Element->CachedW - child->CachedW
+ - Element->PaddingL - Element->PaddingR;
+ else
+ newY += Element->CachedH - child->CachedH
+ - Element->PaddingT - Element->PaddingB;
+ }
+
+ // Check for changes, and don't update if there was no change
+ if( newX != child->CachedX || newY != child->CachedY )
+ {
+ child->CachedX = newX;
+ child->CachedY = newY;
+ // Update child's children positions
+ Widget_UpdatePosition(child);
+ }
+
+ // Increment
+ if(Element->Flags & ELEFLAG_VERTICAL ) {
+ y += child->CachedH + Element->GapSize;
+ }
+ else {
+ x += child->CachedW + Element->GapSize;
+ }
+ }
+}
+
+
+// --- Helpers ---
+tElement *Widget_GetElementById(tWidgetWin *Info, uint32_t ID)
+{
+ tElement *ele;
+
+ if( ID < Info->TableSize ) return Info->ElementTable[ID];
+
+ ele = Info->ElementTable[ID % Info->TableSize];
+ while(ele && ele->ID != ID) ele = ele->ListNext;
+ return ele;
+}
+
+// --- Message Handlers ---
+void Widget_NewWidget(tWidgetWin *Info, size_t Len, tWidgetMsg_Create *Msg)
+{
+ const int max_debugname_len = Len - sizeof(tWidgetMsg_Create);
+ tElement *parent;
+
+ // Sanity check
+ if( Len < sizeof(tWidgetMsg_Create) )
+ return ;
+ if( strnlen(Msg->DebugName, max_debugname_len) == max_debugname_len )
+ return ;
+
+ // Create
+ parent = Widget_GetElementById(Info, Msg->Parent);
+
+}
+
int Renderer_Widget_HandleMessage(tWindow *Target, int Msg, int Len, void *Data)
{
tWidgetWin *info = Target->RendererInfo;
switch(Msg)
{
+ // New Widget
+ case MSG_WIDGET_CREATE:
+ Widget_NewWidget(info, Len, Data);
+ return 0;
+ //
default:
- return 1; // Unhandled
+ return 1; // Unhandled, pass to user
}
}
+
+
+
git.ucc.asn.au / tpg / acess2.git / blobdiff
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