*/
#include "common.h"
#include <stdlib.h>
-#include <strings.h>
+#include <string.h>
#include "wm.h"
// === IMPORTS ===
extern void Decorator_RenderWidget(tElement *Element);
+extern void Video_GetTextDims(tFont *Font, const char *Text, int *W, int *H);
// === PROTOTYPES ===
-tElement *WM_CreateElement(tElement *Parent, int Type, int Flags);
+tElement *WM_CreateElement(tElement *Parent, int Type, int Flags, const char *DebugName);
+void WM_UpdateMinDims(tElement *Element);
void WM_SetFlags(tElement *Element, int Flags);
void WM_SetSize(tElement *Element, int Size);
void WM_SetText(tElement *Element, char *Text);
void WM_Update(void);
// === GLOBALS ===
-tElement gWM_RootElement;
+tElement gWM_RootElement = {
+ DebugName: "ROOT"
+};
struct {
void (*Init)(tElement *This);
void (*UpdateFlags)(tElement *This);
// === CODE ===
// --- Widget Creation and Control ---
-tElement *WM_CreateElement(tElement *Parent, int Type, int Flags)
+tElement *WM_CreateElement(tElement *Parent, int Type, int Flags, const char *DebugName)
{
tElement *ret;
+ const char *dbgName = DebugName ? DebugName : "";
- if(Type < 0 || Type > NUM_ELETYPES) return NULL;
-
- ret = calloc(sizeof(tElement), 1);
+ ret = calloc(sizeof(tElement)+strlen(dbgName)+1, 1);
if(!ret) return NULL;
// Prepare
ret->Type = Type;
+ strcpy(ret->DebugName, dbgName);
if(Parent == NULL) Parent = &gWM_RootElement;
ret->Parent = Parent;
+ ret->Flags = Flags;
// Append to parent's list
- ret->NextSibling = Parent->LastChild;
+ if(Parent->LastChild)
+ Parent->LastChild->NextSibling = ret;
Parent->LastChild = ret;
if(!Parent->FirstChild) Parent->FirstChild = ret;
ret->PaddingT = 2;
ret->PaddingB = 2;
+ if( gaWM_WidgetTypes[Type].Init )
+ gaWM_WidgetTypes[Type].Init(ret);
+
+ WM_UpdateMinDims(ret->Parent);
+
return ret;
}
+/**
+ * \brief Alter an element's flags
+ */
void WM_SetFlags(tElement *Element, int Flags)
{
// Permissions are handled in the message handler
void WM_SetSize(tElement *Element, int Size)
{
if(!Element) return ;
- Element->Size = Size;
+ Element->FixedWith = Size;
return ;
}
+/**
+ * \brief Set the text field of an element
+ * \note Used for the image path on ELETYPE_IMAGE
+ */
void WM_SetText(tElement *Element, char *Text)
{
if(!Element) return ;
{
case ELETYPE_IMAGE:
if(Element->Data) free(Element->Data);
- Element->Data = LoadImage( Element->Text );
+ Element->Data = Image_Load( Element->Text );
if(!Element->Data) {
Element->Flags &= ~ELEFLAG_FIXEDSIZE;
return ;
}
- Element->Flags |= ELEFLAG_FIXEDSIZE;
+ //Element->Flags |= ELEFLAG_FIXEDSIZE;
Element->CachedW = ((tImage*)Element->Data)->Width;
Element->CachedH = ((tImage*)Element->Data)->Height;
- if(Element->Parent && Element->Parent->Flags & ELEFLAG_VERTICAL)
- Element->Size = Element->CachedH;
- else
- Element->Size = Element->CachedW;
- break;
- }
-
- return ;
-}
-
-// --- Pre-Rendering ---
-#if 0
-void WM_UpdateDimensions(tElement *Element, int Pass)
-{
- // Pass zero intialises
- if( Pass == 0 )
- {
- // If not a fixed size element, initialise the sizes
- if( !(Element->Flags & ELEFLAG_FIXEDSIZE) )
- {
- Element->CachedH = 0;
- Element->CachedW = 0;
- if( Element->Size )
- {
- if( Element->Parent->Flags & ELEFLAG_VERTICAL )
- Element->CachedH = Element->Size;
- else
- Element->CachedW = Element->Size;
- }
+ if(Element->Parent && Element->Parent->Flags & ELEFLAG_VERTICAL) {
+ Element->MinCross = ((tImage*)Element->Data)->Width;
+ Element->MinWith = ((tImage*)Element->Data)->Height;
}
- }
-
- int fixedSize = 0, maxCross = 0;
- int nFixed = 0, nChildren = 0;
- for( child = Element->FirstChild; child; child = child->NextSibling )
- {
- WM_UpdateDimensions( child, 0 );
-
- if( Element->Flags & ELEFLAG_VERTICAL )
- {
- if( child->CachedH ) {
- fixedSize += child->CachedH;
- nFixed ++;
- }
- if( maxCross < child->CachedW )
- maxCross = child->CachedW;
+ else {
+ Element->MinWith = ((tImage*)Element->Data)->Width;
+ Element->MinCross = ((tImage*)Element->Data)->Height;
}
- else
+ break;
+
+ case ELETYPE_TEXT:
{
- if( child->CachedW ) {
- fixedSize += child->CachedW;
- nFixed ++;
- }
- if( maxCross < child->CachedH )
- maxCross = child->CachedH;
+ int w=0, h=0;
+ Video_GetTextDims(NULL, Element->Text, &w, &h);
+ if(Element->Parent && Element->Parent->Flags & ELEFLAG_VERTICAL) {
+ Element->MinCross = w;
+ Element->MinWith = h;
}
- nChildren ++;
- }
-
-
- // If we don't have our dimensions, get the child dimensions
- if( Element->CachedW == 0 || Element->CachedH == 0 )
- {
- if( Element->Flags & ELEFLAG_VERTICAL )
- {
- if( Element->CachedW == 0 && maxCross )
- Element->CachedW = Element->PaddingL
- + Element->PaddingR + maxCross;
-
- if( Element->CachedH == 0 && nFixed == nChildren )
- Element->CachedH = Element->PaddingT
- + Element->PaddingB + fixedSize
- + nChildren * Element->GapSize;
+ else {
+ Element->MinWith = w;
+ Element->MinCross = h;
}
- else
- {
- if( maxCross )
- Element->CachedH = Element->PaddingT
- + Element->PaddingB + maxCross;
-
- if( Element->CachedW == 0 && nFixed == nChildren )
- Element->CachedW = Element->PaddingL
- + Element->PaddingR + fixedSize
- + nChildren * Element->GapSize;
}
+ break;
}
- // Now, if we have the "length" of the widget, we can size the children
- if( (Element->Flags & ELEFLAG_VERTICAL && Element->CachedH > 0)
- || (!(Element->Flags & ELEFLAG_VERTICAL) && Element->CachedW > 0) )
- {
- int dynSize;
-
- // Calculate the size of dynamically sized elements
- if( Element->Flags & ELEFLAG_VERTICAL )
- dynSize = Element->CachedH - Element->PaddingT
- - Element->PaddingB - fixedSize;
- else
- dynSize = Element->CachedW - Element->PaddingL
- - Element->PaddingR - fixedSize;
- dynSize /= nChildren - nFixed;
-
- // Itterate children again
- for( child = Element->FirstChild; child; child = child->NextSibling )
- {
- int tmp;
-
- // Get the size of them
- if(child->Size)
- tmp = child->Size;
- else if(dynSize < Element->MinSize)
- tmp = child->MinSize;
- else
- tmp = dynSize;
-
- if( Element->Flags & ELEFLAG_VERTICAL )
- child->CachedH = tmp;
- else
- child->CachedW = tmp;
-
- WM_UpdateDimensions(child, 1);
- }
- }
+ return ;
}
-#endif
-
+// --- Pre-Rendering ---
+/**
+ * \name Pre-Rendering
+ * \brief Updates the element positions and sizes
+ * \{
+ */
/**
* \brief Updates the dimensions of an element
*
void WM_UpdateDimensions(tElement *Element, int Pass)
{
tElement *child;
- int fixedChildSize = 0;
- int dynamicSize;
int nChildren = 0;
int nFixed = 0;
+ int maxCross = 0;
+ int fixedSize = 0;
+ int fullCross, dynWith;
- _SysDebug("WM_UpdateDimensions: (Element=%p{Flags:0x%x}, Pass=%i)",
- Element, Element->Flags,
- Pass);
+ _SysDebug("WM_UpdateDimensions %p'%s'", Element, Element->DebugName);
+ _SysDebug(" -> Flags = 0x%x", Element->Flags);
+ _SysDebug(" ->CachedH = %i, ->PaddingT = %i, ->PaddingB = %i",
+ Element->CachedH, Element->PaddingT, Element->PaddingB
+ );
+ _SysDebug(" ->CachedW = %i, ->PaddingL = %i, ->PaddingR = %i",
+ Element->CachedW, Element->PaddingL, Element->PaddingR
+ );
- if( Pass == 0 )
+ // Pass 1
+ for( child = Element->FirstChild; child; child = child->NextSibling )
{
- if( Element->Flags & ELEFLAG_NORENDER ) return ;
+ if( child->Flags & ELEFLAG_ABSOLUTEPOS )
+ continue ;
- if( !(Element->Flags & ELEFLAG_ABSOLUTEPOS) ) {
- Element->CachedX = 0;
- Element->CachedY = 0;
- }
- if( !(Element->Flags & ELEFLAG_FIXEDSIZE) ) {
- Element->CachedW = 0;
- Element->CachedH = 0;
+ _SysDebug(" > %p'%s' ->FixedWith = %i", child, child->DebugName, child->FixedWith);
+ 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 ++;
}
- if( !(Element->Flags & ELEFLAG_FIXEDSIZE) ) {
- // If the element is sized, fix its dimension(s)
- if(Element->Size)
- {
- if(Element->Flags & ELEFLAG_NOEXPAND)
- {
- Element->CachedW = Element->Size;
- Element->CachedH = Element->Size;
- }
- else {
- if( Element->Parent->Flags & ELEFLAG_VERTICAL ) {
- Element->CachedH = Element->Size;
- Element->CachedW = Element->Parent->CachedW;
- if(Element->CachedW)
- Element->CachedW -= (Element->Parent->PaddingL + Element->Parent->PaddingR);
- }
- else {
- Element->CachedW = Element->Size;
- Element->CachedH = Element->Parent->CachedH;
- if(Element->CachedH)
- Element->CachedH -= (Element->Parent->PaddingT + Element->Parent->PaddingB);
- }
- }
- }
- else {
- // Ok, so now we need to calculate the size of all child elements
- // However, if ELEFLAG_NOEXPAND is not set, we can still set one
- // dimension
- if( !(Element->Flags & ELEFLAG_NOEXPAND) ) {
- if( Element->Parent->Flags & ELEFLAG_VERTICAL ) {
- Element->CachedW = Element->Parent->CachedW;
- if(Element->CachedW)
- Element->CachedW -= (Element->Parent->PaddingL + Element->Parent->PaddingR);
- }
- else {
- Element->CachedH = Element->Parent->CachedH;
- if(Element->CachedH)
- Element->CachedH -= (Element->Parent->PaddingT + Element->Parent->PaddingB);
- }
- }
- }
+ _SysDebug(" - nChildren = %i, nFixed = %i", Element, nChildren, nFixed);
+ 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;
+ _SysDebug(" - dynWith = %i", dynWith);
}
- // Process Children (first pass)
+ if( Element->Flags & ELEFLAG_VERTICAL )
+ fullCross = Element->CachedW - Element->PaddingL - Element->PaddingR;
+ else
+ fullCross = Element->CachedH - Element->PaddingT - Element->PaddingB;
+
+ _SysDebug(" - fullCross = %i", Element, fullCross);
+
+ // Pass 2 - Set sizes and recurse
for( child = Element->FirstChild; child; child = child->NextSibling )
{
- if( child->Flags & ELEFLAG_NORENDER ) continue;
- WM_UpdateDimensions(child, 0);
+ int cross, with;
- // Children that don't inherit positions are ignored
- if( child->Flags & ELEFLAG_ABSOLUTEPOS ) continue;
+ _SysDebug(" > %p'%s' ->MinCross = %i", child, child->DebugName, child->MinCross);
+
- fixedChildSize += child->Size;
- if(child->Size > 0)
- nFixed ++;
- nChildren ++;
+ // --- Cross Size ---
+ if( child->FixedCross )
+ cross = child->FixedCross;
+ // Expand to fill?
+ // TODO: Extra flag so options are (Expand, Equal, Wrap)
+ else if( child->Flags & ELEFLAG_NOEXPAND )
+ cross = child->MinCross;
+ else
+ cross = fullCross;
+ _SysDebug(" > %p'%s' - cross = %i", child, child->DebugName, cross);
+ if( Element->Flags & ELEFLAG_VERTICAL )
+ child->CachedW = cross;
+ else
+ child->CachedH = cross;
- // If we are wrapping the children, get the largest cross size
- if( !(Element->Flags & ELEFLAG_FIXEDSIZE)
- && Element->Flags & ELEFLAG_NOEXPAND
- && Element->Size == 0 )
- {
- if( Element->Flags & ELEFLAG_VERTICAL ) {
- if( Element->CachedW < child->CachedW )
- Element->CachedW = child->CachedW;
- }
- else {
- if( Element->CachedH < child->CachedH )
- Element->CachedH = child->CachedH;
- }
- }
- }
-
- // Let's avoid a #DIV0 shall we?
- if( nChildren > 0 )
- {
- // Calculate the size of dynamically sized children
- if( Element->Flags & ELEFLAG_VERTICAL ) {
- if( Element->CachedH == 0 ) {
- if( nFixed == nChildren )
- Element->CachedH = fixedChildSize;
- else
- return ;
- }
- dynamicSize = (Element->CachedH - (Element->PaddingT + Element->PaddingB) - fixedChildSize) / nChildren;
- }
- else {
- if( Element->CachedW == 0 ) {
- if( nFixed == nChildren )
- Element->CachedW = fixedChildSize;
- else
- return ;
- }
- dynamicSize = (Element->CachedW - (Element->PaddingL + Element->PaddingR) - fixedChildSize) / nChildren;
- }
+ // --- With Size ---
+ if( child->FixedWith)
+ with = child->FixedWith;
+ else if( child->Flags & ELEFLAG_NOSTRETCH )
+ with = child->MinWith;
+ else
+ with = dynWith;
+ _SysDebug(" > %p'%s' - with = %i", child, child->DebugName, with);
+ if( Element->Flags & ELEFLAG_VERTICAL )
+ child->CachedH = with;
+ else
+ child->CachedW = with;
- // Process Children (second pass)
- for( child = Element->FirstChild; child; child = child->NextSibling )
- {
- if( child->Flags & ELEFLAG_NORENDER ) continue;
- // Children that don't inherit positions are ignored
- if( child->Flags & ELEFLAG_ABSOLUTEPOS ) continue;
-
- if(!child->Size) {
- if(child->Flags & ELEFLAG_VERTICAL)
- child->CachedH = dynamicSize;
- else
- child->CachedW = dynamicSize;
- }
-
- WM_UpdateDimensions(child, 1);
-
- // If we are wrapping the children, get the largest cross size
- if( Element->Flags & ELEFLAG_NOEXPAND ) {
- if( Element->Flags & ELEFLAG_VERTICAL ) {
- if( Element->CachedW < child->CachedW )
- Element->CachedW = child->CachedW;
- }
- else {
- if( Element->CachedH < child->CachedH )
- Element->CachedH = child->CachedH;
- }
- }
- }
+ WM_UpdateDimensions(child, 0);
}
- // Add the padding
- //Element->CachedW += Element->PaddingL + Element->PaddingR;
- //Element->CachedH += Element->PaddingT + Element->PaddingB;
-
- _SysDebug("Pass %i, Element %p %ix%i",
- Pass, Element, Element->CachedW, Element->CachedH
- );
-
- // We should be done
- // Next function will do the coordinates
+ _SysDebug("%p'%s' Done", Element, Element->DebugName);
}
-
/**
* \brief Updates the position of an element
*
{
tElement *child;
int x, y;
+ static int depth = 0;
+ char indent[depth+1];
if( Element->Flags & ELEFLAG_NORENDER ) return ;
- _SysDebug("Element=%p{PaddingL:%i, PaddingT:%i}",
- Element, Element->PaddingL, Element->PaddingT);
+ memset(indent, ' ', depth);
+ indent[depth] = '\0';
+ depth ++;
+
+ _SysDebug("%sWM_UpdatePosition %p'%s'{PaddingL:%i, PaddingT:%i}",
+ indent, Element, Element->DebugName, Element->PaddingL, Element->PaddingT);
// Initialise
x = Element->CachedX + Element->PaddingL;
y = Element->CachedY + Element->PaddingT;
+ _SysDebug("%s- Alignment = %s", indent,
+ (Element->Flags & ELEFLAG_VERTICAL) ? "vertical" : "horizontal");
+
// Update each child
for(child = Element->FirstChild; child; child = child->NextSibling)
{
+ _SysDebug("%s- x = %i, y = %i", indent, x, y);
child->CachedX = x;
child->CachedY = y;
// Set Alignment
if( Element->Flags & ELEFLAG_ALIGN_CENTER ) {
- if(Element->Flags & ELEFLAG_VERTICAL )
+ _SysDebug("%sChild being aligned to center", indent);
+ if(Element->Flags & ELEFLAG_VERTICAL)
child->CachedX += Element->CachedW/2 - child->CachedW/2;
else
child->CachedY += Element->CachedH/2 - child->CachedH/2;
}
- else if( Element->Flags & ELEFLAG_ALIGN_END ) {
+ else if( Element->Flags & ELEFLAG_ALIGN_END) {
+ _SysDebug("%sChild being aligned to end", indent);
if(Element->Flags & ELEFLAG_VERTICAL )
- child->CachedX += Element->CachedW - child->CachedW;
+ child->CachedX += Element->CachedW
+ - Element->PaddingL - Element->PaddingR
+ - child->CachedW;
else
- child->CachedY += Element->CachedH - child->CachedH;
+ child->CachedY += Element->CachedH
+ - Element->PaddingT
+ - Element->PaddingB
+ - child->CachedH;
}
+ _SysDebug("%s> %p'%s' at (%i,%i)", indent, child, child->DebugName,
+ child->CachedX, child->CachedY);
+
// Update child's children positions
WM_UpdatePosition(child);
}
}
- _SysDebug("Element %p (%i,%i)",
- Element, Element->CachedX, Element->CachedY
+ _SysDebug("%sElement %p'%s' (%i,%i)",
+ indent, Element, Element->DebugName, Element->CachedX, Element->CachedY
);
+ depth --;
}
+/**
+ * \brief Update the minimum dimensions of the element
+ * \note Called after a child's minimum dimensions have changed
+ */
+void WM_UpdateMinDims(tElement *Element)
+{
+ tElement *child;
+
+ if(!Element) return;
+
+ Element->MinCross = 0;
+ Element->MinWith = 0;
+
+ for(child = Element->FirstChild; child; child = child->NextSibling)
+ {
+ if( Element->Parent &&
+ (Element->Flags & ELEFLAG_VERTICAL) == (Element->Parent->Flags & ELEFLAG_VERTICAL)
+ )
+ {
+ if(child->FixedCross)
+ Element->MinCross += child->FixedCross;
+ else
+ Element->MinCross += child->MinCross;
+ if(child->FixedWith)
+ Element->MinWith += child->FixedWith;
+ else
+ Element->MinWith += child->MinWith;
+ }
+ else
+ {
+ if(child->FixedCross)
+ Element->MinWith += child->FixedCross;
+ else
+ Element->MinWith += child->MinCross;
+ if(child->FixedWith)
+ Element->MinCross += child->FixedWith;
+ else
+ Element->MinCross += child->MinWith;
+ }
+ }
+
+ // Recurse upwards
+ WM_UpdateMinDims(Element->Parent);
+}
+/**
+ * \}
+ */
+
// --- Render ---
void WM_RenderWidget(tElement *Element)
{
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