This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_DirectFB_WM.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2010 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
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SDL1.3 DirectFB driver by couriersud@arcor.de
*/
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#include "SDL_DirectFB_video.h"
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#include "SDL_DirectFB_window.h"
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#include "../../events/SDL_windowevents_c.h"
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#define COLOR_EXPAND(col) col.r, col.g, col.b, col.a
static DFB_Theme theme_std = {
4, 4, 8, 8,
{255, 200, 200, 200},
24,
{255, 0, 0, 255},
16,
{255, 255, 255, 255},
"/usr/share/fonts/truetype/freefont/FreeSans.ttf",
{255, 255, 0, 0},
{255, 255, 255, 0},
};
static DFB_Theme theme_none = {
0, 0, 0, 0,
{0, 0, 0, 0},
0,
{0, 0, 0, 0},
0,
{0, 0, 0, 0},
NULL
};
static void
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DrawTriangle(IDirectFBSurface * s, int down, int x, int y, int w)
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{
int x1, x2, x3;
int y1, y2, y3;
if (down) {
x1 = x + w / 2;
x2 = x;
x3 = x + w;
y1 = y + w;
y2 = y;
y3 = y;
} else {
x1 = x + w / 2;
x2 = x;
x3 = x + w;
y1 = y;
y2 = y + w;
y3 = y + w;
}
s->FillTriangle(s, x1, y1, x2, y2, x3, y3);
}
static void
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LoadFont(_THIS, SDL_Window * window)
{
SDL_DFB_DEVICEDATA(_this);
SDL_DFB_WINDOWDATA(window);
if (windata->font != NULL) {
SDL_DFB_RELEASE(windata->font);
windata->font = NULL;
SDL_DFB_CHECK(windata->window_surface->SetFont(windata->window_surface, windata->font));
}
if (windata->theme.font != NULL)
{
DFBFontDescription fdesc;
SDL_zero(fdesc);
fdesc.flags = DFDESC_HEIGHT;
fdesc.height = windata->theme.font_size;
SDL_DFB_CHECK(devdata->
dfb->CreateFont(devdata->dfb, windata->theme.font,
&fdesc, &windata->font));
SDL_DFB_CHECK(windata->window_surface->SetFont(windata->window_surface, windata->font));
}
}
static void
DrawCraption(_THIS, IDirectFBSurface * s, int x, int y, char *text)
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{
DFBSurfaceTextFlags flags;
flags = DSTF_CENTER | DSTF_TOP;
s->DrawString(s, text, -1, x, y, flags);
}
void
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DirectFB_WM_RedrawLayout(_THIS, SDL_Window * window)
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{
SDL_DFB_WINDOWDATA(window);
IDirectFBSurface *s = windata->window_surface;
DFB_Theme *t = &windata->theme;
int i;
int d = (t->caption_size - t->font_size) / 2;
int x, y, w;
if (!windata->is_managed || (window->flags & SDL_WINDOW_FULLSCREEN))
return;
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SDL_DFB_CHECK(s->SetSrcBlendFunction(s, DSBF_ONE));
SDL_DFB_CHECK(s->SetDstBlendFunction(s, DSBF_ZERO));
SDL_DFB_CHECK(s->SetDrawingFlags(s, DSDRAW_NOFX));
SDL_DFB_CHECK(s->SetBlittingFlags(s, DSBLIT_NOFX));
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LoadFont(_this, window);
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//s->SetDrawingFlags(s, DSDRAW_BLEND);
s->SetColor(s, COLOR_EXPAND(t->frame_color));
/* top */
for (i = 0; i < t->top_size; i++)
s->DrawLine(s, 0, i, windata->size.w, i);
/* bottom */
for (i = windata->size.h - t->bottom_size; i < windata->size.h; i++)
s->DrawLine(s, 0, i, windata->size.w, i);
/* left */
for (i = 0; i < t->left_size; i++)
s->DrawLine(s, i, 0, i, windata->size.h);
/* right */
for (i = windata->size.w - t->right_size; i < windata->size.w; i++)
s->DrawLine(s, i, 0, i, windata->size.h);
/* Caption */
s->SetColor(s, COLOR_EXPAND(t->caption_color));
s->FillRectangle(s, t->left_size, t->top_size, windata->client.w,
t->caption_size);
/* Close Button */
w = t->caption_size;
x = windata->size.w - t->right_size - w + d;
y = t->top_size + d;
s->SetColor(s, COLOR_EXPAND(t->close_color));
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DrawTriangle(s, 1, x, y, w - 2 * d);
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/* Max Button */
s->SetColor(s, COLOR_EXPAND(t->max_color));
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DrawTriangle(s, window->flags & SDL_WINDOW_MAXIMIZED ? 1 : 0, x - w,
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y, w - 2 * d);
/* Caption */
if (window->title) {
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s->SetColor(s, COLOR_EXPAND(t->font_color));
DrawCraption(_this, s, (x - w) / 2, t->top_size + d, window->title);
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}
/* Icon */
if (windata->icon) {
DFBRectangle dr;
dr.x = t->left_size + d;
dr.y = t->top_size + d;
dr.w = w - 2 * d;
dr.h = w - 2 * d;
s->SetBlittingFlags(s, DSBLIT_BLEND_ALPHACHANNEL);
s->StretchBlit(s, windata->icon, NULL, &dr);
}
windata->wm_needs_redraw = 0;
}
DFBResult
DirectFB_WM_GetClientSize(_THIS, SDL_Window * window, int *cw, int *ch)
{
SDL_DFB_WINDOWDATA(window);
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IDirectFBWindow *dfbwin = windata->dfbwin;
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SDL_DFB_CHECK(dfbwin->GetSize(dfbwin, cw, ch));
dfbwin->GetSize(dfbwin, cw, ch);
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*cw -= windata->theme.left_size + windata->theme.right_size;
*ch -=
windata->theme.top_size + windata->theme.caption_size +
windata->theme.bottom_size;
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return DFB_OK;
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}
void
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DirectFB_WM_AdjustWindowLayout(SDL_Window * window, int flags, int w, int h)
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{
SDL_DFB_WINDOWDATA(window);
if (!windata->is_managed)
windata->theme = theme_none;
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else if (flags & SDL_WINDOW_BORDERLESS)
//desc.caps |= DWCAPS_NODECORATION;)
windata->theme = theme_none;
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else if (flags & SDL_WINDOW_FULLSCREEN) {
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windata->theme = theme_none;
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} else if (flags & SDL_WINDOW_MAXIMIZED) {
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windata->theme = theme_std;
windata->theme.left_size = 0;
windata->theme.right_size = 0;
windata->theme.top_size = 0;
windata->theme.bottom_size = 0;
} else {
windata->theme = theme_std;
}
windata->client.x = windata->theme.left_size;
windata->client.y = windata->theme.top_size + windata->theme.caption_size;
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windata->client.w = w;
windata->client.h = h;
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windata->size.w =
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w + windata->theme.left_size + windata->theme.right_size;
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windata->size.h =
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h + windata->theme.top_size +
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windata->theme.caption_size + windata->theme.bottom_size;
}
enum
{
WM_POS_NONE = 0x00,
WM_POS_CAPTION = 0x01,
WM_POS_CLOSE = 0x02,
WM_POS_MAX = 0x04,
WM_POS_LEFT = 0x08,
WM_POS_RIGHT = 0x10,
WM_POS_TOP = 0x20,
WM_POS_BOTTOM = 0x40,
};
static int
WMIsClient(DFB_WindowData * p, int x, int y)
{
x -= p->client.x;
y -= p->client.y;
if (x < 0 || y < 0)
return 0;
if (x >= p->client.w || y >= p->client.h)
return 0;
return 1;
}
static int
WMPos(DFB_WindowData * p, int x, int y)
{
int pos = WM_POS_NONE;
if (!WMIsClient(p, x, y)) {
if (y < p->theme.top_size) {
pos |= WM_POS_TOP;
} else if (y < p->client.y) {
if (x <
p->size.w - p->theme.right_size - 2 * p->theme.caption_size) {
pos |= WM_POS_CAPTION;
} else if (x <
p->size.w - p->theme.right_size -
p->theme.caption_size) {
pos |= WM_POS_MAX;
} else {
pos |= WM_POS_CLOSE;
}
} else if (y >= p->size.h - p->theme.bottom_size) {
pos |= WM_POS_BOTTOM;
}
if (x < p->theme.left_size) {
pos |= WM_POS_LEFT;
} else if (x >= p->size.w - p->theme.right_size) {
pos |= WM_POS_RIGHT;
}
}
return pos;
}
int
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DirectFB_WM_ProcessEvent(_THIS, SDL_Window * window, DFBWindowEvent * evt)
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SDL_DFB_DEVICEDATA(_this);
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SDL_DFB_WINDOWDATA(window);
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DFB_WindowData *gwindata = ((devdata->grabbed_window) ? (DFB_WindowData *) ((devdata->grabbed_window)->driverdata) : NULL);
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IDirectFBWindow *dfbwin = windata->dfbwin;
DFBWindowOptions wopts;
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if (!windata->is_managed)
return 0;
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SDL_DFB_CHECK(dfbwin->GetOptions(dfbwin, &wopts));
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switch (evt->type) {
case DWET_BUTTONDOWN:
if (evt->buttons & DIBM_LEFT) {
int pos = WMPos(windata, evt->x, evt->y);
switch (pos) {
case WM_POS_NONE:
return 0;
case WM_POS_CLOSE:
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windata->wm_grab = WM_POS_NONE;
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SDL_SendWindowEvent(window, SDL_WINDOWEVENT_CLOSE, 0,
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0);
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return 1;
case WM_POS_MAX:
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windata->wm_grab = WM_POS_NONE;
if (window->flags & SDL_WINDOW_MAXIMIZED) {
SDL_RestoreWindow(window);
} else {
SDL_MaximizeWindow(window);
}
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return 1;
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case WM_POS_CAPTION:
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if (!(wopts & DWOP_KEEP_STACKING)) {
DirectFB_RaiseWindow(_this, window);
}
if (window->flags & SDL_WINDOW_MAXIMIZED)
return 1;
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/* fall through */
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default:
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windata->wm_grab = pos;
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if (gwindata != NULL)
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SDL_DFB_CHECK(gwindata->dfbwin->UngrabPointer(gwindata->dfbwin));
SDL_DFB_CHECK(dfbwin->GrabPointer(dfbwin));
windata->wm_lastx = evt->cx;
windata->wm_lasty = evt->cy;
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}
}
return 1;
case DWET_BUTTONUP:
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if (!windata->wm_grab)
return 0;
if (!(evt->buttons & DIBM_LEFT)) {
if (windata->wm_grab & (WM_POS_RIGHT | WM_POS_BOTTOM)) {
int dx = evt->cx - windata->wm_lastx;
int dy = evt->cy - windata->wm_lasty;
if (!(wopts & DWOP_KEEP_SIZE)) {
int cw, ch;
if ((windata->wm_grab & (WM_POS_BOTTOM | WM_POS_RIGHT)) == WM_POS_BOTTOM)
dx = 0;
else if ((windata->wm_grab & (WM_POS_BOTTOM | WM_POS_RIGHT)) == WM_POS_RIGHT)
dy = 0;
SDL_DFB_CHECK(dfbwin->GetSize(dfbwin, &cw, &ch));
/* necessary to trigger an event - ugly*/
SDL_DFB_CHECK(dfbwin->DisableEvents(dfbwin, DWET_ALL));
SDL_DFB_CHECK(dfbwin->Resize(dfbwin, cw + dx + 1, ch + dy));
SDL_DFB_CHECK(dfbwin->EnableEvents(dfbwin, DWET_ALL));
SDL_DFB_CHECK(dfbwin->Resize(dfbwin, cw + dx, ch + dy));
}
}
SDL_DFB_CHECK(dfbwin->UngrabPointer(dfbwin));
if (gwindata != NULL)
SDL_DFB_CHECK(gwindata->dfbwin->GrabPointer(gwindata->dfbwin));
windata->wm_grab = WM_POS_NONE;
return 1;
}
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break;
case DWET_MOTION:
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if (!windata->wm_grab)
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return 0;
if (evt->buttons & DIBM_LEFT) {
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int dx = evt->cx - windata->wm_lastx;
int dy = evt->cy - windata->wm_lasty;
if (windata->wm_grab & WM_POS_CAPTION) {
if (!(wopts & DWOP_KEEP_POSITION))
SDL_DFB_CHECK(dfbwin->Move(dfbwin, dx, dy));
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if (windata->wm_grab & (WM_POS_RIGHT | WM_POS_BOTTOM)) {
if (!(wopts & DWOP_KEEP_SIZE)) {
int cw, ch;
/* Make sure all events are disabled for this operation ! */
SDL_DFB_CHECK(dfbwin->DisableEvents(dfbwin, DWET_ALL));
if ((windata->wm_grab & (WM_POS_BOTTOM | WM_POS_RIGHT)) == WM_POS_BOTTOM)
dx = 0;
else if ((windata->wm_grab & (WM_POS_BOTTOM | WM_POS_RIGHT)) == WM_POS_RIGHT)
dy = 0;
SDL_DFB_CHECK(dfbwin->GetSize(dfbwin, &cw, &ch));
SDL_DFB_CHECK(dfbwin->Resize(dfbwin, cw + dx, ch + dy));
SDL_DFB_CHECK(dfbwin->EnableEvents(dfbwin, DWET_ALL));
}
}
windata->wm_lastx = evt->cx;
windata->wm_lasty = evt->cy;
return 1;
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}
break;
case DWET_KEYDOWN:
break;
case DWET_KEYUP:
break;
default:
;
}
return 0;
}