2 * Acess2 Window Manager v3
3 * - By John Hodge (thePowersGang)
9 #include <wm_renderer.h>
10 #include <renderer_widget.h>
12 #include <wm_messages.h>
14 #include "include/image.h"
16 #define DEFAULT_ELETABLE_SIZE 64
19 int Renderer_Widget_Init(void);
20 tWindow *Renderer_Widget_Create(int Flags);
21 void Renderer_Widget_Redraw(tWindow *Window);
23 void Widget_RenderWidget(tWindow *Window, tElement *Element);
24 void Widget_UpdateDimensions(tElement *Element);
25 void Widget_UpdatePosition(tElement *Element);
27 tElement *Widget_GetElementById(tWidgetWin *Info, uint32_t ID);
28 void Widget_NewWidget(tWidgetWin *Info, size_t Len, tWidgetMsg_Create *Msg);
29 void Widget_SetFlags(tWidgetWin *Info, int Len, tWidgetMsg_SetFlags *Msg);
30 void Widget_SetSize(tWidgetWin *Info, int Len, tWidgetMsg_SetSize *Msg);
31 void Widget_SetText(tWidgetWin *Info, int Len, tWidgetMsg_SetText *Msg);
32 int Renderer_Widget_HandleMessage(tWindow *Target, int Msg, int Len, void *Data);
34 void Widget_DispText_UpdateText(tElement *Element, const char *Text);
35 void Widget_Image_UpdateText(tElement *Element, const char *Text);
36 int Widget_Button_MouseButton(tElement *Element, int X, int Y, int Button, int bPress);
37 void Widget_TextInput_Init(tElement *Element);
40 tWMRenderer gRenderer_Widget = {
42 .CreateWindow = Renderer_Widget_Create,
43 .Redraw = Renderer_Widget_Redraw,
44 .HandleMessage = Renderer_Widget_HandleMessage
47 // --- Element callbacks
49 void (*Init)(tElement *Ele);
50 void (*Delete)(tElement *Ele);
52 void (*UpdateFlags)(tElement *Ele);
53 void (*UpdateSize)(tElement *Ele);
54 void (*UpdateText)(tElement *Ele, const char *Text); // This should update Ele->Text
57 * \name Input handlers
58 * \note Returns boolean unhandled
61 int (*MouseButton)(tElement *Ele, int X, int Y, int Button, int bPressed);
62 int (*MouseMove)(tElement *Ele, int X, int Y);
63 int (*KeyDown)(tElement *Ele, int KeySym, int Character);
64 int (*KeyUp)(tElement *Ele, int KeySym);
65 int (*KeyFire)(tElement *Ele, int KeySym, int Character);
69 } gaWM_WidgetTypes[NUM_ELETYPES] = {
72 {.UpdateText = Widget_DispText_UpdateText}, // Text
73 {.UpdateText = Widget_Image_UpdateText}, // Image
74 {.MouseButton = Widget_Button_MouseButton}, // Button
76 {.Init = Widget_TextInput_Init}, // Text Box (Single Line)
78 const int ciWM_NumWidgetTypes = sizeof(gaWM_WidgetTypes)/sizeof(gaWM_WidgetTypes[0]);
81 int Renderer_Widget_Init(void)
83 WM_RegisterRenderer(&gRenderer_Widget);
88 tWindow *Renderer_Widget_Create(int Flags)
92 int eletable_size = DEFAULT_ELETABLE_SIZE;
94 _SysDebug("Renderer_Widget_Create: (Flags = 0x%x)", Flags);
96 // TODO: Use `Flags` as default element count?
97 // - Actaully, it's taken by the root ele flags
98 // - Use the upper bits?
100 ret = WM_CreateWindowStruct( sizeof(tWidgetWin) + sizeof(tElement*)*eletable_size );
101 info = ret->RendererInfo;
103 info->TableSize = eletable_size;
104 info->RootElement.Window = ret;
105 info->RootElement.ID = -1;
106 info->RootElement.BackgroundColour = 0xCCCCCC;
107 info->RootElement.Flags = Flags;
112 void Renderer_Widget_Redraw(tWindow *Window)
114 tWidgetWin *info = Window->RendererInfo;
115 WM_Render_FillRect(Window, 0, 0, 0xFFF, 0xFFF, info->RootElement.BackgroundColour);
117 Widget_UpdateDimensions(&info->RootElement);
118 Widget_UpdatePosition(&info->RootElement);
120 Widget_RenderWidget(Window, &info->RootElement);
123 // --- Render / Resize ---
124 void Widget_RenderWidget(tWindow *Window, tElement *Element)
128 if( Element->Flags & ELEFLAG_NORENDER ) return ;
129 if( Element->Flags & ELEFLAG_INVISIBLE ) return ;
131 Widget_Decorator_RenderWidget(Window, Element);
133 for(child = Element->FirstChild; child; child = child->NextSibling)
135 Widget_RenderWidget(Window, child);
139 void Widget_UpdateDimensions(tElement *Element)
146 int fullCross, dynWith;
149 // - Get the fixed and minimum sizes of the element
150 for( child = Element->FirstChild; child; child = child->NextSibling )
152 // Ignore elements that will not be rendered
153 if( child->Flags & ELEFLAG_NORENDER ) continue ;
155 // Absolutely positioned elements don't affect dimensions
156 if( child->Flags & ELEFLAG_ABSOLUTEPOS ) continue ;
158 // Fixed width elements
159 if( child->FixedWith )
162 fixedSize += child->FixedWith;
164 else if( child->Flags & ELEFLAG_NOSTRETCH )
167 fixedSize += child->MinWith;
170 if( child->FixedCross && maxCross < child->FixedCross )
171 maxCross = child->FixedCross;
172 if( child->MinCross && maxCross < child->MinCross )
173 maxCross = child->MinCross;
177 // Get the dynamic with size from the unused space in the element
178 if( nChildren > nFixed ) {
179 if( Element->Flags & ELEFLAG_VERTICAL )
180 dynWith = Element->CachedH - Element->PaddingT - Element->PaddingB;
182 dynWith = Element->CachedW - Element->PaddingL - Element->PaddingR;
183 dynWith -= fixedSize;
184 if( dynWith < 0 ) return ;
185 dynWith /= nChildren - nFixed;
188 // _SysDebug("%i - nChildren = %i, nFixed = %i, dynWith = %i, fixedSize = %i",
189 // Element->ID, nChildren, nFixed, dynWith, fixedSize);
191 // Get the cross size
192 if( Element->Flags & ELEFLAG_VERTICAL )
193 fullCross = Element->CachedW - Element->PaddingL - Element->PaddingR;
195 fullCross = Element->CachedH - Element->PaddingT - Element->PaddingB;
197 // Pass 2 - Set sizes and recurse
198 for( child = Element->FirstChild; child; child = child->NextSibling )
202 // Ignore elements that will not be rendered
203 if( child->Flags & ELEFLAG_NORENDER ) continue ;
205 // --- Cross Size ---
206 // TODO: Expand to fill?
207 // TODO: Extra flag so options are (Expand, Equal, Wrap)
208 if( child->FixedCross )
209 cross = child->FixedCross;
210 else if( child->Flags & ELEFLAG_NOEXPAND )
211 cross = child->MinCross;
216 if( child->FixedWith )
217 with = child->FixedWith;
218 else if( child->Flags & ELEFLAG_NOSTRETCH )
219 with = child->MinWith;
224 if(with < child->MinWith) with = child->MinWith;
225 if(cross < child->MinCross) cross = child->MinCross;
227 // Update the dimensions if they have changed
228 if( Element->Flags & ELEFLAG_VERTICAL ) {
229 // If no change, don't recurse
230 if( child->CachedW == cross && child->CachedH == with )
232 child->CachedW = cross;
233 child->CachedH = with;
236 // If no change, don't recurse
237 if( child->CachedW == with && child->CachedH == cross )
239 child->CachedW = with;
240 child->CachedH = cross;
243 // Force the positions of child elements to be recalculated
246 // Recurse down so the child elements can be updated
247 Widget_UpdateDimensions(child);
253 * \brief Update the position of child elements
255 void Widget_UpdatePosition(tElement *Element)
260 if( Element->Flags & ELEFLAG_NORENDER ) return ;
262 // _SysDebug("Widget_UpdatePosition: (Element=%p(%i Type=%i Flags=0x%x))",
263 // Element, Element->ID, Element->Type, Element->Flags);
266 x = Element->CachedX + Element->PaddingL;
267 y = Element->CachedY + Element->PaddingT;
270 for(child = Element->FirstChild; child; child = child->NextSibling)
273 // Ignore elements that will not be rendered
274 if( child->Flags & ELEFLAG_NORENDER ) continue ;
279 if( Element->Flags & ELEFLAG_ALIGN_CENTER ) {
280 if(Element->Flags & ELEFLAG_VERTICAL)
281 newX += Element->CachedW/2 - child->CachedW/2;
283 newY += Element->CachedH/2 - child->CachedH/2;
285 else if( Element->Flags & ELEFLAG_ALIGN_END ) {
286 if(Element->Flags & ELEFLAG_VERTICAL )
287 newX += Element->CachedW - child->CachedW
288 - Element->PaddingL - Element->PaddingR;
290 newY += Element->CachedH - child->CachedH
291 - Element->PaddingT - Element->PaddingB;
294 // _SysDebug(" Widget_UpdatePosition[%i]: newX = %i, newY = %i", Element->ID, newX, newY);
296 // Check for changes, and don't update if there was no change
297 if( newX != child->CachedX || newY != child->CachedY )
299 child->CachedX = newX;
300 child->CachedY = newY;
301 // Update child's children positions
302 Widget_UpdatePosition(child);
306 if(Element->Flags & ELEFLAG_VERTICAL ) {
307 y += child->CachedH + Element->GapSize;
310 x += child->CachedW + Element->GapSize;
316 * \brief Update the minimum dimensions of the element
317 * \note Called after a child's minimum dimensions have changed
319 void Widget_UpdateMinDims(tElement *Element)
325 Element->MinCross = 0;
326 Element->MinWith = 0;
328 for(child = Element->FirstChild; child; child = child->NextSibling)
330 if( Element->Parent &&
331 (Element->Flags & ELEFLAG_VERTICAL) == (Element->Parent->Flags & ELEFLAG_VERTICAL)
334 if(child->FixedCross)
335 Element->MinCross += child->FixedCross;
337 Element->MinCross += child->MinCross;
339 Element->MinWith += child->FixedWith;
341 Element->MinWith += child->MinWith;
345 if(child->FixedCross)
346 Element->MinWith += child->FixedCross;
348 Element->MinWith += child->MinCross;
350 Element->MinCross += child->FixedWith;
352 Element->MinCross += child->MinWith;
357 Widget_UpdateMinDims(Element->Parent);
360 tElement *Widget_GetElementByPos(tWidgetWin *Info, int X, int Y)
362 tElement *ret, *next, *ele;
364 next = &Info->RootElement;
369 for(ele = ret->FirstChild; ele; ele = ele->NextSibling)
371 if(ele->Flags & ELEFLAG_NORENDER) continue;
372 if(X < ele->CachedX) continue;
373 if(Y < ele->CachedY) continue;
374 if(X >= ele->CachedX + ele->CachedW) continue;
375 if(Y >= ele->CachedY + ele->CachedH) continue;
383 tElement *Widget_GetElementById(tWidgetWin *Info, uint32_t ID)
387 if( ID == -1 ) return &Info->RootElement;
389 if( ID < Info->TableSize ) return Info->ElementTable[ID];
391 ele = Info->ElementTable[ID % Info->TableSize];
392 while(ele && ele->ID != ID) ele = ele->ListNext;
396 // --- Message Handlers ---
397 void Widget_NewWidget(tWidgetWin *Info, size_t Len, tWidgetMsg_Create *Msg)
399 const int max_debugname_len = Len - sizeof(tWidgetMsg_Create);
400 tElement *parent, *new;
403 if( Len < sizeof(tWidgetMsg_Create) )
405 if( strnlen(Msg->DebugName, max_debugname_len) == max_debugname_len )
408 _SysDebug("Widget_NewWidget (%i %i Type %i Flags 0x%x)",
409 Msg->Parent, Msg->NewID, Msg->Type, Msg->Flags);
412 parent = Widget_GetElementById(Info, Msg->Parent);
415 _SysDebug("Widget_NewWidget - Bad parent ID %i", Msg->Parent);
419 // Check if the ID is already in use
420 if( Widget_GetElementById(Info, Msg->NewID) )
423 // Create new element
424 new = calloc(sizeof(tElement), 1);
425 new->Window = parent->Window;
426 new->ID = Msg->NewID;
427 new->Type = Msg->Type;
428 new->Parent = parent;
429 new->Flags = Msg->Flags;
436 if( new->Type < ciWM_NumWidgetTypes && gaWM_WidgetTypes[new->Type].Init )
437 gaWM_WidgetTypes[new->Type].Init(new);
439 // Add to parent's list
440 if(parent->LastChild)
441 parent->LastChild->NextSibling = new;
443 parent->FirstChild = new;
444 parent->LastChild = new;
448 tElement *ele, *prev = NULL;
449 for(ele = Info->ElementTable[new->ID % Info->TableSize]; ele; prev = ele, ele = ele->ListNext);
451 prev->ListNext = new;
453 Info->ElementTable[new->ID % Info->TableSize] = new;
456 Widget_UpdateMinDims(parent);
459 void Widget_SetFlags(tWidgetWin *Info, int Len, tWidgetMsg_SetFlags *Msg)
463 if( Len < sizeof(tWidgetMsg_SetFlags) )
466 _SysDebug("Widget_SetFlags: (%i 0x%x 0x%x)", Msg->WidgetID, Msg->Value, Msg->Mask);
468 ele = Widget_GetElementById(Info, Msg->WidgetID);
471 Msg->Value &= Msg->Mask;
473 ele->Flags &= ~Msg->Mask;
474 ele->Flags |= Msg->Value;
477 void Widget_SetSize(tWidgetWin *Info, int Len, tWidgetMsg_SetSize *Msg)
481 if( Len < sizeof(tWidgetMsg_SetSize) )
484 ele = Widget_GetElementById(Info, Msg->WidgetID);
487 ele->FixedWith = Msg->Value;
490 void Widget_SetText(tWidgetWin *Info, int Len, tWidgetMsg_SetText *Msg)
494 if( Len < sizeof(tWidgetMsg_SetText) + 1 )
496 if( Msg->Text[Len - sizeof(tWidgetMsg_SetText) - 1] != '\0' )
499 ele = Widget_GetElementById(Info, Msg->WidgetID);
503 if( ele->Type < ciWM_NumWidgetTypes && gaWM_WidgetTypes[ele->Type].UpdateText )
505 gaWM_WidgetTypes[ele->Type].UpdateText( ele, Msg->Text );
509 // if(ele->Text) free(ele->Text);
510 // ele->Text = strdup(Msg->Text);
514 int Renderer_Widget_HandleMessage(tWindow *Target, int Msg, int Len, void *Data)
516 tWidgetWin *info = Target->RendererInfo;
519 case WNDMSG_RESIZE: {
520 struct sWndMsg_Resize *msg = Data;
521 if(Len < sizeof(*msg)) return -1;
523 info->RootElement.CachedW = msg->W;
524 info->RootElement.CachedH = msg->H;
526 // TODO: Update dimensions of all child elements?
530 case WNDMSG_MOUSEMOVE: {
531 _SysDebug("TODO: Support widget mouse move events");
534 case WNDMSG_MOUSEBTN: {
535 struct sWndMsg_MouseButton *msg = Data;
536 tWidgetMsg_MouseBtn client_msg;
541 if(Len < sizeof(*msg)) return -1;
543 x = msg->X; y = msg->Y;
544 client_msg.Button = msg->Button;
545 client_msg.bPressed = msg->bPressed;
547 ele = Widget_GetElementByPos(info, x, y);
548 // Send event to all elements from `ele` upwards
549 for( ; ele; ele = ele->Parent )
551 if(ele->Type < ciWM_NumWidgetTypes && gaWM_WidgetTypes[ele->Type].MouseButton)
553 rv = gaWM_WidgetTypes[ele->Type].MouseButton(
555 x - ele->CachedX, y - ele->CachedY,
556 msg->Button, msg->bPressed
558 // Allow a type to trap the input from going any higher
564 client_msg.X = x - ele->CachedX;
565 client_msg.Y = y - ele->CachedY;
566 client_msg.WidgetID = ele->ID;
567 WM_SendMessage(Target, Target, MSG_WIDGET_MOUSEBTN, sizeof(client_msg), &client_msg);
573 case MSG_WIDGET_CREATE:
574 Widget_NewWidget(info, Len, Data);
577 case MSG_WIDGET_DELETE:
578 _SysDebug("TODO: Implement MSG_WIDGET_DELETE");
582 case MSG_WIDGET_SETFLAGS:
583 Widget_SetFlags(info, Len, Data);
587 case MSG_WIDGET_SETSIZE:
588 Widget_SetSize(info, Len, Data);
592 case MSG_WIDGET_SETTEXT:
593 Widget_SetText(info, Len, Data);
598 return 1; // Unhandled, pass to user
602 void Widget_Fire(tElement *Element)
605 msg.WidgetID = Element->ID;
606 WM_SendMessage(Element->Window, Element->Window, MSG_WIDGET_FIRE, sizeof(msg), &msg);
610 void Widget_DispText_UpdateText(tElement *Element, const char *Text)
614 if(Element->Text) free(Element->Text);
615 Element->Text = strdup(Text);
617 WM_Render_GetTextDims(NULL, Element->Text, &w, &h);
618 if(Element->Parent && (Element->Parent->Flags & ELEFLAG_VERTICAL)) {
619 Element->MinCross = w;
620 Element->MinWith = h;
623 Element->MinWith = w;
624 Element->MinCross = h;
627 Widget_UpdateMinDims(Element->Parent);
630 void Widget_Image_UpdateText(tElement *Element, const char *Text)
632 if(Element->Data) free(Element->Data);
633 Element->Data = Image_Load( Text );
635 // Element->Flags &= ~ELEFLAG_FIXEDSIZE;
639 Element->CachedW = ((tImage*)Element->Data)->Width;
640 Element->CachedH = ((tImage*)Element->Data)->Height;
642 if(Element->Parent && (Element->Parent->Flags & ELEFLAG_VERTICAL) ) {
643 Element->MinCross = ((tImage*)Element->Data)->Width;
644 Element->MinWith = ((tImage*)Element->Data)->Height;
647 Element->MinWith = ((tImage*)Element->Data)->Width;
648 Element->MinCross = ((tImage*)Element->Data)->Height;
651 Widget_UpdateMinDims(Element->Parent);
653 // NOTE: Doesn't update Element->Text because it's useless
656 int Widget_Button_MouseButton(tElement *Element, int X, int Y, int Button, int bPress)
658 _SysDebug("Ele %i - Button %i %s",
660 (bPress ? "pressed" : "released")
662 if(!bPress) Widget_Fire(Element);
666 void Widget_TextInput_Init(tElement *Element)
670 // TODO: Select font correctly
671 WM_Render_GetTextDims(NULL, "jJ", NULL, &h);
673 if( Element->Parent && (Element->Parent->Flags & ELEFLAG_VERTICAL) )
674 Element->MinWith = h;
676 Element->MinCross = h;
678 // No need to explicitly update parent min dims, as the AddElement routine does that