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Kevin Bentley
351
ui/UIDraw.cpp
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351
ui/UIDraw.cpp
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/*
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* $Logfile: /DescentIII/Main/ui/UIDraw.cpp $
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* $Revision: 16 $
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* $Date: 4/14/99 1:52a $
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* $Author: Jeff $
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*
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* UI Library internal code.
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*
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* $Log: /DescentIII/Main/ui/UIDraw.cpp $
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*
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* 16 4/14/99 1:52a Jeff
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* fixed case mismatched #includes
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*
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* 15 10/22/98 2:43p Samir
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* ui_DrawStiring uses grtext_Puts.
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*
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* 14 10/12/98 9:28a Jason
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* fixed some rendering bugs
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*
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* 13 9/30/98 4:32p Samir
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* alpha is set to UICharAlpha when drawing a string.
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*
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* 12 9/08/98 10:27a Samir
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* added function to get text height.
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*
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* 11 5/07/98 2:59p Samir
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* modified ui_StartDraw.
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*
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* 10 3/18/98 6:25p Samir
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* Don't turn Z-buffering back on.
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*
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* 9 3/10/98 1:08p Samir
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* Fixed ui_DrawBitmap to always draw properly by setting states.
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*
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* 8 3/10/98 12:49p Samir
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* Added text saturation support.
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*
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* 7 2/26/98 4:56p Samir
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* Fixed some line drawing probs.
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*
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* 6 2/10/98 4:56p Samir
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* Fixed bug in ui_DrawRect.
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*
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* 5 1/30/98 7:06p Samir
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* Added text clipping.
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*
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* 4 1/18/98 4:22p Samir
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* Implemented new UIItem system.
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*
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* 3 1/05/98 4:36p Samir
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* Moved centering and fittext control flags to UIGadget class.
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*
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* 2 1/02/98 12:42p Samir
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* Added ui_GetTextWidth.
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*
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* 1 12/30/97 4:36p Samir
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* Initial revision
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*
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* $NoKeywords: $
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*/
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#include "UIlib.h"
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#include "bitmap.h"
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#include "ddvid.h"
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#include "renderer.h"
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#include "grtext.h"
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#include "3d.h"
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//////////////////////////////////////////////////////////////////////////////
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// VARIABLES
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static int m_UIDrawLeft;
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static int m_UIDrawTop;
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static int m_UIDrawRight;
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static int m_UIDrawBottom;
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static ubyte m_UIDrawAlpha, m_UICharAlpha;
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static int m_UITextFlags=0;
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//////////////////////////////////////////////////////////////////////////////
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// FUNCTIONS
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//////////////////////////////////////////////////////////////////////////////
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// DRAWING PRIMATIVE FUNCTIONS
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void ui_StartDraw(int left, int top, int right, int bottom)
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{
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// for software renderers perform frame buffer lock.
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if (Renderer_type == RENDERER_SOFTWARE_16BIT) {
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int w, h, color_depth, pitch;
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ubyte *data;
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ddvid_GetVideoProperties(&w, &h, &color_depth);
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ddvid_LockFrameBuffer(&data, &pitch);
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rend_SetSoftwareParameters(ddvid_GetAspectRatio(), w, h, pitch, data);
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}
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m_UIDrawLeft = left;
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m_UIDrawTop = top;
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m_UIDrawRight = right;
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m_UIDrawBottom = bottom;
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m_UIDrawAlpha = m_UICharAlpha = 255;
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rend_StartFrame(m_UIDrawLeft, m_UIDrawTop, m_UIDrawRight, m_UIDrawBottom);
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grtext_SetParameters(0, 0, right-left+1, bottom-top+1);
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}
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void ui_EndDraw()
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{
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grtext_Flush();
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rend_EndFrame();
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// for software renderers perform unlock on frame buffer.
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if (Renderer_type == RENDERER_SOFTWARE_16BIT) {
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ddvid_UnlockFrameBuffer();
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}
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}
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// sets text clipping within the startdraw region
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void ui_SetTextClip(int left, int top, int right, int bottom)
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{
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grtext_SetParameters(left, top, right, bottom);
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}
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void ui_ResetTextClip()
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{
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grtext_SetParameters(m_UIDrawLeft, m_UIDrawTop, m_UIDrawRight, m_UIDrawBottom);
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}
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// draw primatives
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void ui_DrawSetAlpha(ubyte alpha)
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{
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m_UIDrawAlpha = alpha;
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}
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void ui_DrawLine(ddgr_color color, int x1, int y1, int x2, int y2)
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{
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if (color == TRANSPARENT_COLOR32)
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return;
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rend_SetFlatColor(color);
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rend_DrawLine(x1,y1,x2,y2);
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}
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void ui_DrawBox(ddgr_color color, int l, int t, int r, int b)
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{
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if (color == TRANSPARENT_COLOR32)
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return;
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rend_SetFlatColor(color);
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rend_DrawLine(l,t,r-1,t);
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rend_DrawLine(r-1,t,r-1,b-1);
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rend_DrawLine(l,b-1,r-1,b-1);
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rend_DrawLine(l,t,l,b-1);
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}
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void ui_DrawLTBox(ddgr_color lt_col, ddgr_color rb_col, int l, int t, int r, int b)
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{
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if (lt_col != TRANSPARENT_COLOR32) {
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rend_SetFlatColor(lt_col);
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rend_DrawLine(l,t,r-1,t);
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rend_DrawLine(l,t,l,b-1);
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}
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if (rb_col != TRANSPARENT_COLOR32) {
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rend_SetFlatColor(rb_col);
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rend_DrawLine(l,b-1,r-1,b-1);
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rend_DrawLine(r-1,t+1,r-1,b-1);
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}
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}
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void ui_DrawRect(ddgr_color color, int l, int t, int r, int b)
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{
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if (color == TRANSPARENT_COLOR32) return;
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g3Point *pntlist[4],points[4];
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int i;
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// Set our four corners to cover the screen
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points[0].p3_sx=l;
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points[0].p3_sy=t;
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points[1].p3_sx=r;
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points[1].p3_sy=t;
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points[2].p3_sx=r;
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points[2].p3_sy=b;
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points[3].p3_sx=l;
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points[3].p3_sy=b;
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for (i=0;i<4;i++)
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{
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points[i].p3_z=0;
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points[i].p3_flags=PF_PROJECTED;
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pntlist[i]=&points[i];
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}
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rend_SetZBufferState(0);
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rend_SetTextureType (TT_FLAT);
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rend_SetAlphaType (AT_CONSTANT);
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rend_SetLighting (LS_NONE);
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rend_SetFlatColor (color);
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rend_SetAlphaValue(m_UIDrawAlpha);
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rend_DrawPolygon2D( 0, pntlist, 4 );
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}
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// draws all textures derived from ui_bm_handle.
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void ui_DrawBitmap(UIBitmapItem *bi, int x, int y, ubyte alpha)
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{
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if (bi->is_chunked()) {
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chunked_bitmap *chunk = bi->get_chunked_bitmap();
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rend_DrawChunkedBitmap(chunk, x, y, alpha);
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}
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else {
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int bmp_w = bm_w(bi->get_bitmap(), 0);
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int bmp_h = bm_h(bi->get_bitmap(), 0);
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float u1,v1;
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if ((x+bmp_w) > m_UIDrawRight) {
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u1 = ((float)(m_UIDrawRight-x))/((float)bmp_w);
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bmp_w = m_UIDrawRight-x;
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}
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else
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u1 = 1.0f;
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if ((y+bmp_h) > m_UIDrawBottom) {
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v1 = ((float)(m_UIDrawBottom-y))/((float)bmp_h);
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bmp_h = m_UIDrawBottom-y;
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}
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else
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v1 = 1.0f;
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rend_SetOverlayType (OT_NONE);
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rend_SetLighting (LS_NONE);
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rend_SetColorModel (CM_MONO);
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rend_SetZBufferState (0);
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rend_SetAlphaType(ATF_CONSTANT+ATF_TEXTURE);
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rend_SetAlphaValue(alpha);
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rend_SetWrapType (WT_CLAMP);
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rend_DrawScaledBitmap(x,y,x+bmp_w,y+bmp_h, bi->get_bitmap(), 0,0,u1,v1);
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}
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}
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int ui_GetBitmapWidth(UIBitmapItem *bi)
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{
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if (bi->is_chunked()) {
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chunked_bitmap *chunk = bi->get_chunked_bitmap();
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return chunk->pw;
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}
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else {
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return bm_w(bi->get_bitmap(), 0);
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}
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}
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int ui_GetBitmapHeight(UIBitmapItem *bi)
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{
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if (bi->is_chunked()) {
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chunked_bitmap *chunk = bi->get_chunked_bitmap();
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return chunk->ph;
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}
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else {
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return bm_h(bi->get_bitmap(), 0);
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}
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}
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// sets font for text drawing.
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void ui_DrawSetFont(int handle)
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{
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grtext_SetFont(handle);
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}
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int ui_DrawGetFont()
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{
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return grtext_GetFont();
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}
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int ui_GetFontHeight()
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{
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return grfont_GetHeight(grtext_GetFont());
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}
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void ui_SetCharAlpha(ubyte alpha)
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{
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m_UICharAlpha = alpha;
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}
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int ui_GetTextWidth(const char *text)
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{
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return grtext_GetLineWidth((char *)text);
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}
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int ui_GetTextHeight(const char *text)
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{
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return grtext_GetHeight(text);
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}
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void ui_DrawSetTextType(int type)
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{
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switch (type)
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{
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case UI_TEXTTYPE_SHADOW:
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m_UITextFlags = GRTEXTFLAG_SHADOW;
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break;
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case UI_TEXTTYPE_SATURATE:
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m_UITextFlags = GRTEXTFLAG_SATURATE;
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break;
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default:
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m_UITextFlags = 0;
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}
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}
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// draws a line of text.
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void ui_DrawString(ddgr_color col, int x, int y, const char *str)
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{
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grtext_SetFlags(m_UITextFlags);
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grtext_SetAlpha(m_UICharAlpha);
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grtext_SetColor(col);
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grtext_Puts(x,y,str);
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grtext_Flush();
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}
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void ui_DrawCenteredString(ddgr_color col, int xoff, int y, const char *str)
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{
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grtext_SetFlags(m_UITextFlags);
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grtext_SetAlpha(m_UICharAlpha);
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grtext_SetColor(col);
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grtext_CenteredPrintf(xoff,y,str);
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grtext_Flush();
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}
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