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Viewing changes to desklet-rendering/src/rendering-desklet-tree.c

  • Committer: Bazaar Package Importer
  • Author(s): Didier Roche
  • Date: 2009-08-26 21:07:39 UTC
  • Revision ID: james.westby@ubuntu.com-20090826210739-gyjuuqezrzuluao4
Tags: upstream-2.0.8.1
Import upstream version 2.0.8.1

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desklet-rendering/src/rendering-desklet-tree.c
 
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/**
 
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* This file is a part of the Cairo-Dock project
 
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*
 
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* Copyright : (C) see the 'copyright' file.
 
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* E-mail    : see the 'copyright' file.
 
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*
 
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* This program is free software; you can redistribute it and/or
 
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* modify it under the terms of the GNU General Public License
 
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* as published by the Free Software Foundation; either version 3
 
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* of the License, or (at your option) any later version.
 
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*
 
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* This program is distributed in the hope that it will be useful,
 
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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* GNU General Public License for more details.
 
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* You should have received a copy of the GNU General Public License
 
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* along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
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*/
 
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/*********************************************************************************
 
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This file is a part of the cairo-dock program, 
 
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released under the terms of the GNU General Public License.
 
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Written by Fabrice Rey (for any bug report, please mail me to fabounet@users.berlios.de)
 
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*********************************************************************************/
 
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#include <string.h>
 
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#include <math.h>
 
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#include <cairo-dock.h>
 
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#include "rendering-desklet-tree.h"
 
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#define TREE_WIDTH 150
 
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#define TREE_HEIGHT 161
 
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static int s_iLeafPosition[2][3*3] = {{-30,30,1 , 60,107,0 , -45,115,1},{-60,65,0 , 55,115,1 , -30,115,0}};
 
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CDTreeParameters *rendering_configure_tree (CairoDesklet *pDesklet, cairo_t *pSourceContext, gpointer *pConfig)
 
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{
 
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        cd_message ("");
 
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        GList *pIconsList = pDesklet->icons;
 
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        if (pIconsList == NULL)
 
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                return NULL;
 
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        int iNbIcons = 0;
 
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        Icon *pIcon;
 
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        GList *ic;
 
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        for (ic = pIconsList; ic != NULL; ic = ic->next)
 
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        {
 
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                pIcon = ic->data;
 
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                if (! CAIRO_DOCK_IS_SEPARATOR (pIcon))
 
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                        iNbIcons ++;
 
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        }
 
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        if (iNbIcons == 0)
 
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                return NULL;
 
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        CDTreeParameters *pTree = g_new0 (CDTreeParameters, 1);
 
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        pTree->iNbIconsInTree = iNbIcons;
 
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        pTree->iNbBranches = (int) ceil (1.*iNbIcons/3.);
 
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        double h = pDesklet->iHeight, w = pDesklet->iWidth;
 
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        pTree->fTreeWidthFactor = (w > TREE_WIDTH ? 1 : w / TREE_WIDTH);
 
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        pTree->fTreeHeightFactor = h / (pTree->iNbBranches * TREE_HEIGHT);
 
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        cd_message (" -> %d icones, %d branches, proportions : %.2fx%.2f", pTree->iNbIconsInTree, pTree->iNbBranches, pTree->fTreeWidthFactor, pTree->fTreeHeightFactor);
 
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        return pTree;
 
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}
 
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void rendering_load_tree_data (CairoDesklet *pDesklet, cairo_t *pSourceContext)
 
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{
 
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        CDTreeParameters *pTree = (CDTreeParameters *) pDesklet->pRendererData;
 
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        if (pTree == NULL)
 
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                return ;
 
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        double fImageWidth = TREE_WIDTH * pTree->fTreeWidthFactor, fImageHeight = TREE_HEIGHT * pTree->fTreeHeightFactor;
 
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        gchar *cImageFilePath = g_strconcat (MY_APPLET_SHARE_DATA_DIR, "/branche1.svg", NULL);
 
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        pTree->pBrancheSurface[0] = cairo_dock_load_image (pSourceContext,
 
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                cImageFilePath,
 
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                &fImageWidth,
 
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                &fImageHeight,
 
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                0.,
 
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                1.,
 
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                FALSE);
 
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        cImageFilePath[strlen(cImageFilePath)-5] = '2';
 
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        pTree->pBrancheSurface[1] = cairo_dock_load_image (pSourceContext,
 
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                cImageFilePath,
 
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                &fImageWidth,
 
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                &fImageHeight,
 
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                0.,
 
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                1.,
 
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                FALSE);
 
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        g_free (cImageFilePath);
 
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}
 
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void rendering_free_tree_data (CairoDesklet *pDesklet)
 
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{
 
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        cd_message ("");
 
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        CDTreeParameters *pTree = (CDTreeParameters *) pDesklet->pRendererData;
 
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        if (pTree == NULL)
 
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                return ;
 
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        cairo_surface_destroy (pTree->pBrancheSurface[0]);
 
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        cairo_surface_destroy (pTree->pBrancheSurface[1]);
 
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        g_free (pTree);
 
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        pDesklet->pRendererData = NULL;
 
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}
 
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void rendering_load_icons_for_tree (CairoDesklet *pDesklet, cairo_t *pSourceContext)
 
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{
 
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        g_return_if_fail (pDesklet != NULL && pSourceContext != NULL);
 
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        CDTreeParameters *pTree = (CDTreeParameters *) pDesklet->pRendererData;
 
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        if (pTree == NULL)
 
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                return ;
 
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        GList* ic;
 
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        Icon *icon;
 
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        for (ic = pDesklet->icons; ic != NULL; ic = ic->next)
 
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        {
 
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                icon = ic->data;
 
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                icon->fWidth = 48 * MIN (pTree->fTreeWidthFactor, pTree->fTreeHeightFactor);
 
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                icon->fHeight = 48 * MIN (pTree->fTreeWidthFactor, pTree->fTreeHeightFactor);
 
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                cairo_dock_fill_icon_buffers_for_desklet (icon, pSourceContext);
 
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        }
 
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}
 
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void rendering_draw_tree_in_desklet (cairo_t *pCairoContext, CairoDesklet *pDesklet, gboolean bRenderOptimized)
 
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{
 
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        CDTreeParameters *pTree = (CDTreeParameters *) pDesklet->pRendererData;
 
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        cd_message ("");
 
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        if (pTree == NULL)
 
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                return ;
 
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        double h = pDesklet->iHeight, w = pDesklet->iWidth;
 
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        int i;
 
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        for (i = 0; i < pTree->iNbBranches; i ++)
 
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        {
 
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                cairo_save (pCairoContext);
 
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                //g_print (" branche %d en (%.2f;%.2f)\n", i, (w - pTree->fTreeWidthFactor * TREE_WIDTH) / 2, h - i * TREE_HEIGHT * pTree->fTreeHeightFactor);
 
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                cairo_translate (pCairoContext, (w - pTree->fTreeWidthFactor * TREE_WIDTH) / 2, h - (i + 1) * TREE_HEIGHT * pTree->fTreeHeightFactor);
 
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                cairo_set_source_surface (pCairoContext, pTree->pBrancheSurface[i%2], 0, 0);
 
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                cairo_paint (pCairoContext);
 
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                cairo_restore (pCairoContext);
 
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        }
 
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        int iBrancheNumber=0, iBrancheType=0, iLeafNumber=0;
 
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        double x, y;
 
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        int sens;
 
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        Icon *pIcon;
 
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        GList *ic;
 
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        for (ic = pDesklet->icons; ic != NULL; ic = ic->next)
 
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        {
 
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                pIcon = ic->data;
 
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                if (! CAIRO_DOCK_IS_SEPARATOR (pIcon))
 
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                {
 
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                        x = s_iLeafPosition[iBrancheType][3*iLeafNumber];
 
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                        y = s_iLeafPosition[iBrancheType][3*iLeafNumber+1];
 
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                        sens = s_iLeafPosition[iBrancheType][3*iLeafNumber+2];
 
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                        pIcon->fDrawX = w / 2 + x * pTree->fTreeWidthFactor - pIcon->fWidth / 2;
 
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                        pIcon->fDrawY = h - (iBrancheNumber * TREE_HEIGHT + y) * pTree->fTreeHeightFactor - sens * pIcon->fHeight;
 
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                        pIcon->fScale = 1;
 
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                        pIcon->fAlpha = 1;
 
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                        pIcon->fWidthFactor = 1;
 
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                        pIcon->fHeightFactor = 1;
 
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                        cairo_save (pCairoContext);
 
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                        cairo_dock_render_one_icon_in_desklet (pIcon, pCairoContext, FALSE, TRUE, pDesklet->iWidth);
 
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                        cairo_restore (pCairoContext);
 
180
                        
 
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                        iLeafNumber ++;
 
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                        if (iLeafNumber == 3)
 
183
                        {
 
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                                iLeafNumber = 0;
 
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                                iBrancheNumber ++;
 
186
                                iBrancheType = iBrancheNumber % 2;
 
187
                        }
 
188
                }
 
189
        }
 
190
}
 
191
 
 
192
 
 
193
void rendering_register_tree_desklet_renderer (void)
 
194
{
 
195
        CairoDeskletRenderer *pRenderer = g_new0 (CairoDeskletRenderer, 1);
 
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        pRenderer->render = rendering_draw_tree_in_desklet ;
 
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        pRenderer->configure = rendering_configure_tree;
 
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        pRenderer->load_data = rendering_load_tree_data;
 
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        pRenderer->free_data = rendering_free_tree_data;
 
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        pRenderer->load_icons = rendering_load_icons_for_tree;
 
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        cairo_dock_register_desklet_renderer (MY_APPLET_TREE_DESKLET_RENDERER_NAME, pRenderer);
 
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}