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WebSurf/frontends/amiga/corewindow.c

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/*
* Copyright 2017 Chris Young <chris@unsatisfactorysoftware.co.uk>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \file
* Amiga core window interface.
*
* Provides interface for core renderers to the Amiga Intuition drawable area.
*
* This module is an object that must be encapsulated. Client users
* should embed a struct ami_corewindow at the beginning of their
* context for this display surface, fill in relevant data and then
* call ami_corewindow_init()
*
* The Amiga core window structure requires the callback for draw, key and
* mouse operations.
*/
#include "amiga/os3support.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "utils/log.h"
#include "utils/utils.h"
#include "utils/messages.h"
#include "utils/utf8.h"
#include "netsurf/keypress.h"
#include "netsurf/mouse.h"
#include "netsurf/plot_style.h"
#include <proto/exec.h>
#include <proto/graphics.h>
#include <proto/intuition.h>
#include <proto/layout.h>
#include <proto/utility.h>
#include <classes/window.h>
#include <gadgets/layout.h>
#include <gadgets/scroller.h>
#include <gadgets/space.h>
#include <intuition/icclass.h>
#include <reaction/reaction_macros.h>
#include "amiga/corewindow.h"
#include "amiga/drag.h"
#include "amiga/memory.h"
#include "amiga/misc.h"
#include "amiga/object.h"
#include "amiga/schedule.h"
#include "amiga/utf8.h"
static void
ami_cw_scroller_top(struct ami_corewindow *ami_cw,
ULONG *restrict x,
ULONG *restrict y)
{
ULONG xs = 0;
ULONG ys = 0;
if(ami_cw->scroll_x_visible == true) {
GetAttr(SCROLLER_Top, ami_cw->objects[GID_CW_HSCROLL], &xs);
}
if(ami_cw->scroll_y_visible == true) {
GetAttr(SCROLLER_Top, ami_cw->objects[GID_CW_VSCROLL], &ys);
}
*x = xs;
*y = ys;
}
static void
ami_cw_window_size(struct ami_corewindow *ami_cw, int *width, int *height)
{
struct IBox *bbox;
if(ami_gui_get_space_box((Object *)ami_cw->objects[GID_CW_DRAW], &bbox) != NSERROR_OK) {
amiga_warn_user("NoMemory", "");
return;
}
*width = bbox->Width;
*height = bbox->Height;
ami_gui_free_space_box(bbox);
}
/**
* Convert co-ordinates relative to space.gadget
* into document co-ordinates
*
* @param ami_cw core window
* @param x co-ordinate, will be updated to new x co-ordinate
* @param y co-ordinate, will be updated to new y co-ordinate
*/
static void
ami_cw_coord_amiga_to_ns(struct ami_corewindow *ami_cw, int *restrict x, int *restrict y)
{
ULONG xs = 0;
ULONG ys = 0;
ami_cw_scroller_top(ami_cw, &xs, &ys);
*x = *x + xs;
*y = *y + ys;
}
/**
* check if mouse has moved since position was stored
* @param ami_cw corewindow
* @param x current x position
* @param y current y position
* @param click true to check since last click, false since last drag (press)
* @return true if it has, false otherwise
*/
static bool
ami_cw_mouse_moved(struct ami_corewindow *ami_cw, int x, int y, bool click)
{
int mx, my;
if(click == true) {
mx = ami_cw->mouse_x_click;
my = ami_cw->mouse_y_click;
} else {
mx = ami_cw->drag_x_start;
my = ami_cw->drag_y_start;
}
if(abs(x - mx) > 5) return true;
if(abs(y - my) > 5) return true;
return false;
}
/* get current mouse position in the draw area, adjusted for scroll.
* @return true if the mouse was in the draw area and co-ordinates updated
*/
static bool
ami_cw_mouse_pos(struct ami_corewindow *ami_cw, int *restrict x, int *restrict y)
{
int16 xm, ym;
ULONG xs, ys;
struct IBox *bbox;
xm = ami_cw->win->MouseX;
ym = ami_cw->win->MouseY;
if(ami_gui_get_space_box((Object *)ami_cw->objects[GID_CW_DRAW], &bbox) != NSERROR_OK) {
amiga_warn_user("NoMemory", "");
return false;
}
xm -= bbox->Left;
ym -= bbox->Top;
if((xm < 0) || (ym < 0) || (xm > bbox->Width) || (ym > bbox->Height))
return false;
ami_gui_free_space_box(bbox);
ami_cw_scroller_top(ami_cw, &xs, &ys);
xm += xs;
ym += ys;
*x = xm;
*y = ym;
return true;
}
/* handle keypress */
static void
ami_cw_key(struct ami_corewindow *ami_cw, int nskey)
{
ami_cw->key(ami_cw, nskey);
switch(nskey) {
case NS_KEY_COPY_SELECTION:
/* if we've copied a selection we need to clear it - style guide rules */
ami_cw->key(ami_cw, NS_KEY_CLEAR_SELECTION);
break;
/* we may need to deal with scroll-related keys here */
}
}
/**
* Redraw functions
*
* This is slightly over-engineered as it was taken from the main
* browser/old tree redraws and supports deferred drawing of
* rectangles and tiling
*/
/**
* Redraw an area of a core window
*
* \param ami_cw An Amiga core window structure
* \param r rect (in document co-ordinates)
*/
static void
ami_cw_redraw_rect(struct ami_corewindow *ami_cw, struct rect *r)
{
struct IBox *bbox;
ULONG pos_x, pos_y;
struct rect draw_rect;
int tile_size_x;
int tile_size_y;
int tile_x, tile_y, tile_w, tile_h;
int x = r->x0;
int y = r->y0;
int width = r->x1 - r->x0;
int height = r->y1 - r->y0;
struct redraw_context ctx = {
.interactive = true,
.background_images = true,
.plot = &amiplot,
.priv = ami_cw->gg
};
if(ami_gui_get_space_box((Object *)ami_cw->objects[GID_CW_DRAW], &bbox) != NSERROR_OK) {
amiga_warn_user("NoMemory", "");
return;
}
ami_cw_scroller_top(ami_cw, &pos_x, &pos_y);
if(x - (LONG)pos_x + width > bbox->Width) width = bbox->Width - (x - pos_x);
if(y - (LONG)pos_y + height > bbox->Height) height = bbox->Height - (y - pos_y);
if(x < (LONG)pos_x) {
width -= pos_x - x;
x = pos_x;
}
if(y < (LONG)pos_y) {
height -= pos_y - y;
y = pos_y;
}
ami_plot_ra_get_size(ami_cw->gg, &tile_size_x, &tile_size_y);
for(tile_y = y; tile_y < (y + height); tile_y += tile_size_y) {
tile_h = tile_size_y;
if(((y + height) - tile_y) < tile_size_y)
tile_h = (y + height) - tile_y;
for(tile_x = x; tile_x < (x + width); tile_x += tile_size_x) {
tile_w = tile_size_x;
if(((x + width) - tile_x) < tile_size_x)
tile_w = (x + width) - tile_x;
draw_rect.x0 = tile_x; // was -
draw_rect.y0 = tile_y; // was -
draw_rect.x1 = tile_x + tile_w;
draw_rect.y1 = tile_y + tile_h;
ami_cw->draw(ami_cw, -tile_x, -tile_y, &draw_rect, &ctx);
#ifdef __amigaos4__
BltBitMapTags(BLITA_SrcType, BLITT_BITMAP,
BLITA_Source, ami_plot_ra_get_bitmap(ami_cw->gg),
BLITA_SrcX, 0,
BLITA_SrcY, 0,
BLITA_DestType, BLITT_RASTPORT,
BLITA_Dest, ami_cw->win->RPort,
BLITA_DestX, bbox->Left + tile_x - pos_x,
BLITA_DestY, bbox->Top + tile_y - pos_y,
BLITA_Width, tile_w,
BLITA_Height, tile_h,
TAG_DONE);
#else
BltBitMapRastPort(ami_plot_ra_get_bitmap(ami_cw->gg), 0, 0,
ami_cw->win->RPort, bbox->Left + tile_x - pos_x, bbox->Top + tile_y - pos_y,
tile_w, tile_h, 0xC0);
#endif
}
}
ami_gui_free_space_box(bbox);
ami_clearclipreg(ami_cw->gg);
}
/**
* Draw the deferred rectangles
*
* \param ami_cw An Amiga core window structure to queue redraw
* \param draw set to false to just delete the queue
*/
static void ami_cw_redraw_queue(struct ami_corewindow *ami_cw, bool draw)
{
struct nsObject *node;
struct nsObject *nnode;
struct rect *rect;
if(IsMinListEmpty(ami_cw->deferred_rects)) return;
if(draw == false) {
NSLOG(netsurf, INFO, "Ignoring deferred box redraw queue");
} // else should probably show busy pointer
node = (struct nsObject *)GetHead((struct List *)ami_cw->deferred_rects);
do {
if(draw == true) {
rect = (struct rect *)node->objstruct;
ami_cw_redraw_rect(ami_cw, rect);
}
nnode = (struct nsObject *)GetSucc((struct Node *)node);
ami_memory_itempool_free(ami_cw->deferred_rects_pool, node->objstruct, sizeof(struct rect));
DelObjectNoFree(node);
} while((node = nnode));
}
static void
ami_cw_redraw_cb(void *p)
{
struct ami_corewindow *ami_cw = (struct ami_corewindow *)p;
ami_cw_redraw_queue(ami_cw, true);
}
/**
* Queue a redraw of a rectangle
*
* @param ami_cw the core window to redraw
* @param r the rectangle (in doc coords) to redraw, or NULL for full window
*/
static void
ami_cw_redraw(struct ami_corewindow *ami_cw, const struct rect *restrict r)
{
struct nsObject *nsobj;
struct rect *restrict deferred_rect;
struct rect new_rect;
if(r == NULL) {
struct IBox *bbox;
if(ami_gui_get_space_box((Object *)ami_cw->objects[GID_CW_DRAW], &bbox) != NSERROR_OK) {
amiga_warn_user("NoMemory", "");
return;
}
new_rect.x0 = 0;
new_rect.y0 = 0;
ami_cw_coord_amiga_to_ns(ami_cw, &new_rect.x0, &new_rect.y0);
new_rect.x1 = new_rect.x0 + bbox->Width;
new_rect.y1 = new_rect.y0 + bbox->Height;
ami_gui_free_space_box(bbox);
r = &new_rect;
}
if(ami_gui_window_update_box_deferred_check(ami_cw->deferred_rects, r,
ami_cw->deferred_rects_pool)) {
deferred_rect = ami_memory_itempool_alloc(ami_cw->deferred_rects_pool, sizeof(struct rect));
CopyMem(r, deferred_rect, sizeof(struct rect));
nsobj = AddObject(ami_cw->deferred_rects, AMINS_RECT);
nsobj->objstruct = deferred_rect;
} else {
NSLOG(netsurf, INFO,
"Ignoring duplicate or subset of queued box redraw");
}
ami_schedule(1, ami_cw_redraw_cb, ami_cw);
}
static void ami_cw_simplerefresh(struct ami_corewindow *ami_cw)
{
struct rect r;
struct RegionRectangle *regrect;
BeginRefresh(ami_cw->win);
r.x0 = ami_cw->win->RPort->Layer->DamageList->bounds.MinX;
r.x1 = ami_cw->win->RPort->Layer->DamageList->bounds.MaxX;
r.y0 = ami_cw->win->RPort->Layer->DamageList->bounds.MinY;
r.y1 = ami_cw->win->RPort->Layer->DamageList->bounds.MaxY;
ami_cw_coord_amiga_to_ns(ami_cw, &r.x0, &r.y0);
ami_cw_coord_amiga_to_ns(ami_cw, &r.y0, &r.y1);
regrect = ami_cw->win->RPort->Layer->DamageList->RegionRectangle;
ami_cw_redraw(ami_cw, &r); /* queue redraw */
while(regrect) {
r.x0 = regrect->bounds.MinX;
r.x1 = regrect->bounds.MaxX;
r.y0 = regrect->bounds.MinY;
r.y1 = regrect->bounds.MaxY;
ami_cw_coord_amiga_to_ns(ami_cw, &r.x0, &r.y0);
ami_cw_coord_amiga_to_ns(ami_cw, &r.y0, &r.y1);
regrect = regrect->Next;
ami_cw_redraw(ami_cw, &r); /* queue redraw */
}
EndRefresh(ami_cw->win, TRUE);
}
static void
ami_cw_toggle_scrollbar(struct ami_corewindow *ami_cw, bool vert, bool visible)
{
Object *scroller;
Object *layout;
ULONG tag;
if(vert == true) {
if(visible == ami_cw->scroll_y_visible) {
return;
} else {
scroller = ami_cw->objects[GID_CW_VSCROLL];
layout = ami_cw->objects[GID_CW_VSCROLLLAYOUT];
tag = WINDOW_VertProp;
ami_cw->scroll_y_visible = visible;
}
} else {
if(visible == ami_cw->scroll_x_visible) {
return;
} else {
scroller = ami_cw->objects[GID_CW_HSCROLL];
layout = ami_cw->objects[GID_CW_HSCROLLLAYOUT];
tag = WINDOW_HorizProp;
ami_cw->scroll_x_visible = visible;
}
}
if(visible == true) {
if(ami_cw->in_border_scroll == true) {
SetAttrs(ami_cw->objects[GID_CW_WIN],
tag, 1,
TAG_DONE);
} else {
#ifdef __amigaos4__
IDoMethod(layout, LM_ADDCHILD, ami_cw->win, scroller, NULL);
#else
SetAttrs(layout, LAYOUT_AddChild, scroller, TAG_DONE);
#endif
}
} else {
if(ami_cw->in_border_scroll == true) {
SetAttrs(ami_cw->objects[GID_CW_WIN],
tag, -1,
TAG_DONE);
} else {
#ifdef __amigaos4__
IDoMethod(layout, LM_REMOVECHILD, ami_cw->win, scroller);
#else
SetAttrs(layout, LAYOUT_RemoveChild, scroller, TAG_DONE);
#endif
}
}
if(ami_cw->in_border_scroll == false) {
FlushLayoutDomainCache((struct Gadget *)ami_cw->objects[GID_CW_WIN]);
RethinkLayout((struct Gadget *)ami_cw->objects[GID_CW_WIN],
ami_cw->win, NULL, TRUE);
}
/* probably need to redraw here */
ami_cw_redraw(ami_cw, NULL);
}
static void
ami_cw_close(void *w)
{
struct ami_corewindow *ami_cw = (struct ami_corewindow *)w;
ami_cw->close(ami_cw);
}
HOOKF(void, ami_cw_idcmp_hook, Object *, object, struct IntuiMessage *)
{
struct ami_corewindow *ami_cw = hook->h_Data;
struct IntuiWheelData *wheel;
ULONG gid = GetTagData( GA_ID, 0, msg->IAddress );
switch(msg->Class)
{
case IDCMP_IDCMPUPDATE:
switch(gid)
{
case GID_CW_HSCROLL:
case GID_CW_VSCROLL:
ami_cw_redraw(ami_cw, NULL);
break;
}
break;
#ifdef __amigaos4__
case IDCMP_EXTENDEDMOUSE:
if(msg->Code == IMSGCODE_INTUIWHEELDATA)
{
wheel = (struct IntuiWheelData *)msg->IAddress;
//ami_tree_scroll(twin, (wheel->WheelX * 20), (wheel->WheelY * 20));
}
break;
#endif
case IDCMP_SIZEVERIFY:
break;
case IDCMP_REFRESHWINDOW:
ami_cw_simplerefresh(ami_cw);
break;
default:
NSLOG(netsurf, INFO,
"IDCMP hook unhandled event: %ld", msg->Class);
break;
}
}
/**
* Drag start
*/
static void
ami_cw_drag_start(struct ami_corewindow *ami_cw, int x, int y)
{
if(ami_cw->dragging == true) return;
ami_cw->dragging = true;
ami_cw->drag_x_start = x;
ami_cw->drag_y_start = y;
switch(ami_cw->drag_status) {
case CORE_WINDOW_DRAG_SELECTION:
break;
case CORE_WINDOW_DRAG_MOVE:
ami_drag_icon_show(ami_cw->win, "project");
break;
default:
break;
}
}
/**
* Drag progress
*/
static void
ami_cw_drag_progress(struct ami_corewindow *ami_cw, int x, int y)
{
if(ami_cw->dragging == false) return;
switch(ami_cw->drag_status) {
case CORE_WINDOW_DRAG_SELECTION:
break;
case CORE_WINDOW_DRAG_MOVE:
ami_drag_icon_move();
break;
default:
break;
}
}
/**
* Drag end
*/
static void
ami_cw_drag_end(struct ami_corewindow *ami_cw, int x, int y)
{
if(ami_cw->dragging == false) return;
struct Screen *scrn = ami_gui_get_screen();
switch(ami_cw->drag_status) {
case CORE_WINDOW_DRAG_SELECTION:
break;
case CORE_WINDOW_DRAG_MOVE:
ami_drag_icon_close(ami_cw->win);
if((ami_cw != ami_window_at_pointer(AMINS_COREWINDOW)) && (ami_cw->drag_end != NULL)) {
ami_cw->drag_end(ami_cw, scrn->MouseX, scrn->MouseY);
}
break;
default:
break;
}
ami_cw->drag_status = CORE_WINDOW_DRAG_NONE;
ami_cw->dragging = false;
}
/**
* User has resized window
*/
static void
ami_cw_newsize(struct ami_corewindow *ami_cw)
{
int win_w, win_h;
ami_cw_window_size(ami_cw, &win_w, &win_h);
if(ami_cw->objects[GID_CW_HSCROLL] != NULL) {
RefreshSetGadgetAttrs((struct Gadget *)ami_cw->objects[GID_CW_HSCROLL], ami_cw->win, NULL,
SCROLLER_Visible, win_w,
TAG_DONE);
}
if(ami_cw->objects[GID_CW_VSCROLL] != NULL) {
RefreshSetGadgetAttrs((struct Gadget *)ami_cw->objects[GID_CW_VSCROLL], ami_cw->win, NULL,
SCROLLER_Visible, win_h,
TAG_DONE);
}
ami_cw_redraw(ami_cw, NULL);
}
/**
* Main event loop for our core window
*
* \return TRUE if window destroyed
*/
static BOOL
ami_cw_event(void *w)
{
struct ami_corewindow *ami_cw = (struct ami_corewindow *)w;
ULONG result;
ULONG storage;
uint16 code;
struct InputEvent *ie;
int nskey;
int key_state = 0;
struct timeval curtime;
int x = 0, y = 0;
while((result = RA_HandleInput(ami_cw->objects[GID_CW_WIN], &code)) != WMHI_LASTMSG) {
if(ami_cw->close_window == true) {
ami_cw_close(ami_cw);
return TRUE;
}
switch(result & WMHI_CLASSMASK) {
case WMHI_MOUSEMOVE:
if(ami_cw_mouse_pos(ami_cw, &x, &y) == true) {
if(ami_cw_mouse_moved(ami_cw, x, y, false)) {
if(ami_cw->mouse_state & BROWSER_MOUSE_PRESS_1) {
/* Start button 1 drag */
ami_cw->mouse(ami_cw, BROWSER_MOUSE_DRAG_1, x, y);
/* Replace PRESS with HOLDING and declare drag in progress */
ami_cw->mouse_state = BROWSER_MOUSE_HOLDING_1 | BROWSER_MOUSE_DRAG_ON;
} else if(ami_cw->mouse_state & BROWSER_MOUSE_PRESS_2) {
/* Start button 2 drag */
ami_cw->mouse(ami_cw, BROWSER_MOUSE_DRAG_2, x, y);
/* Replace PRESS with HOLDING and declare drag in progress */
ami_cw->mouse_state = BROWSER_MOUSE_HOLDING_2 | BROWSER_MOUSE_DRAG_ON;
}
key_state = ami_gui_get_quals(ami_cw->objects[GID_CW_WIN]);
ami_cw->mouse(ami_cw, ami_cw->mouse_state | key_state, x, y);
if(ami_cw->mouse_state & BROWSER_MOUSE_DRAG_ON) {
ami_cw_drag_start(ami_cw, x, y);
}
} else {
key_state = ami_gui_get_quals(ami_cw->objects[GID_CW_WIN]);
ami_cw->mouse(ami_cw, ami_cw->mouse_state | key_state, x, y);
}
}
ami_cw_drag_progress(ami_cw, x, y);
break;
case WMHI_MOUSEBUTTONS:
if(ami_cw_mouse_pos(ami_cw, &x, &y) == true) {
key_state = ami_gui_get_quals(ami_cw->objects[GID_CW_WIN]);
switch(code) {
case SELECTDOWN:
ami_cw->mouse_state = BROWSER_MOUSE_PRESS_1;
ami_cw->drag_x_start = x;
ami_cw->drag_y_start = y;
break;
case MIDDLEDOWN:
ami_cw->mouse_state = BROWSER_MOUSE_PRESS_2;
ami_cw->drag_x_start = x;
ami_cw->drag_y_start = y;
break;
case SELECTUP:
if(ami_cw->mouse_state & BROWSER_MOUSE_PRESS_1) {
CurrentTime((ULONG *)&curtime.tv_sec, (ULONG *)&curtime.tv_usec);
ami_cw->mouse_state = BROWSER_MOUSE_CLICK_1;
if(ami_cw->lastclick.tv_sec) {
if((ami_cw_mouse_moved(ami_cw, x, y, true) == false) &&
(DoubleClick(ami_cw->lastclick.tv_sec,
ami_cw->lastclick.tv_usec,
curtime.tv_sec, curtime.tv_usec)))
ami_cw->mouse_state |= BROWSER_MOUSE_DOUBLE_CLICK;
}
ami_cw->mouse_x_click = x;
ami_cw->mouse_y_click = y;
if(ami_cw->mouse_state & BROWSER_MOUSE_DOUBLE_CLICK) {
ami_cw->lastclick.tv_sec = 0;
ami_cw->lastclick.tv_usec = 0;
} else {
ami_cw->lastclick.tv_sec = curtime.tv_sec;
ami_cw->lastclick.tv_usec = curtime.tv_usec;
}
}
ami_cw->mouse(ami_cw, ami_cw->mouse_state | key_state, x, y);
ami_cw->mouse_state = BROWSER_MOUSE_HOVER;
break;
case MIDDLEUP:
if(ami_cw->mouse_state & BROWSER_MOUSE_PRESS_2)
ami_cw->mouse_state = BROWSER_MOUSE_CLICK_2;
ami_cw->mouse(ami_cw, ami_cw->mouse_state | key_state, x, y);
ami_cw->mouse_state = BROWSER_MOUSE_HOVER;
break;
}
if(ami_cw->mouse_state == BROWSER_MOUSE_HOVER) {
ami_cw_drag_end(ami_cw, x, y);
}
ami_cw->mouse(ami_cw, ami_cw->mouse_state | key_state, x, y);
} else {
/* event is happening away from our corewindow area */
switch(code) {
case SELECTUP:
case MIDDLEUP:
ami_cw->mouse_state = BROWSER_MOUSE_HOVER;
break;
default:
break;
}
if(ami_cw->mouse_state == BROWSER_MOUSE_HOVER) {
ami_cw_drag_end(ami_cw, x, y);
ami_cw->mouse(ami_cw, ami_cw->mouse_state | key_state,
ami_cw->drag_x_start, ami_cw->drag_y_start); // placate core
}
}
break;
case WMHI_RAWKEY:
storage = result & WMHI_GADGETMASK;
GetAttr(WINDOW_InputEvent, ami_cw->objects[GID_CW_WIN], (ULONG *)&ie);
nskey = ami_key_to_nskey(storage, ie);
ami_cw_key(ami_cw, nskey);
break;
case WMHI_NEWSIZE:
ami_cw_newsize(ami_cw);
break;
case WMHI_CLOSEWINDOW:
ami_cw_close(ami_cw);
return TRUE;
break;
default:
/* pass the event to the window owner */
if(ami_cw->event != NULL)
if(ami_cw->event(ami_cw, result) == TRUE) {
return TRUE;
}
break;
}
};
return FALSE;
}
static const struct ami_win_event_table ami_cw_table = {
ami_cw_event,
ami_cw_close,
};
/**
* callback from core to request an invalidation of a amiga core window area.
*
* The specified area of the window should now be considered
* out of date. If the area is NULL the entire window must be
* invalidated.
*
* \param[in] cw The core window to invalidate.
* \param[in] r area to redraw or NULL for the entire window area.
* \return NSERROR_OK on success or appropriate error code.
*/
static nserror
ami_cw_invalidate_area(struct core_window *cw, const struct rect *r)
{
struct ami_corewindow *ami_cw = (struct ami_corewindow *)cw;
ami_cw_redraw(ami_cw, r);
return NSERROR_OK;
}
static nserror
ami_cw_get_window_dimensions(const struct core_window *cw,
int *width, int *height)
{
struct ami_corewindow *ami_cw = (struct ami_corewindow *)cw;
ami_cw_window_size(ami_cw, width, height);
return NSERROR_OK;
}
static nserror
ami_cw_update_size(struct core_window *cw, int width, int height)
{
struct ami_corewindow *ami_cw = (struct ami_corewindow *)cw;
int win_w, win_h;
ami_cw_window_size(ami_cw, &win_w, &win_h);
if(width == -1) {
ami_cw_toggle_scrollbar(ami_cw, false, false);
} else {
ami_cw_toggle_scrollbar(ami_cw, false, true);
RefreshSetGadgetAttrs((struct Gadget *)ami_cw->objects[GID_CW_HSCROLL], ami_cw->win, NULL,
SCROLLER_Total, (ULONG)width,
SCROLLER_Visible, win_w,
TAG_DONE);
}
if(height == -1) {
ami_cw_toggle_scrollbar(ami_cw, true, false);
} else {
ami_cw_toggle_scrollbar(ami_cw, true, true);
RefreshSetGadgetAttrs((struct Gadget *)ami_cw->objects[GID_CW_VSCROLL], ami_cw->win, NULL,
SCROLLER_Total, height,
SCROLLER_Visible, win_h,
TAG_DONE);
}
return NSERROR_OK;
}
static nserror
ami_cw_get_scroll(const struct core_window *cw, int *x, int *y)
{
struct ami_corewindow *ami_cw = (struct ami_corewindow *)cw;
ULONG win_x0, win_y0;
ami_cw_scroller_top(ami_cw, &win_x0, &win_y0);
*x = win_x0;
*y = win_y0;
return NSERROR_OK;
}
static nserror
ami_cw_set_scroll(struct core_window *cw, int x, int y)
{
struct ami_corewindow *ami_cw = (struct ami_corewindow *)cw;
if(ami_cw->scroll_y_visible == true) {
RefreshSetGadgetAttrs((APTR)ami_cw->objects[GID_CW_VSCROLL], ami_cw->win, NULL,
SCROLLER_Top, y,
TAG_DONE);
}
if(ami_cw->scroll_x_visible == true) {
RefreshSetGadgetAttrs((APTR)ami_cw->objects[GID_CW_HSCROLL], ami_cw->win, NULL,
SCROLLER_Top, x,
TAG_DONE);
}
/* probably need to redraw here */
ami_cw_redraw(ami_cw, NULL);
return NSERROR_OK;
}
static nserror
ami_cw_drag_status(struct core_window *cw, core_window_drag_status ds)
{
struct ami_corewindow *ami_cw = (struct ami_corewindow *)cw;
ami_cw->drag_status = ds;
return NSERROR_OK;
}
struct core_window_callback_table ami_cw_cb_table = {
.invalidate = ami_cw_invalidate_area,
.update_size = ami_cw_update_size,
.set_scroll = ami_cw_set_scroll,
.get_scroll = ami_cw_get_scroll,
.get_window_dimensions = ami_cw_get_window_dimensions,
.drag_status = ami_cw_drag_status
};
/* exported function documented example/corewindow.h */
nserror ami_corewindow_init(struct ami_corewindow *ami_cw)
{
/* setup the core window callback table */
ami_cw->cb_table = &ami_cw_cb_table;
ami_cw->drag_status = CORE_WINDOW_DRAG_NONE;
/* clear some vars */
ami_cw->mouse_state = BROWSER_MOUSE_HOVER;
ami_cw->lastclick.tv_sec = 0;
ami_cw->lastclick.tv_usec = 0;
ami_cw->scroll_x_visible = true;
ami_cw->scroll_y_visible = true;
ami_cw->in_border_scroll = false;
ami_cw->dragging = false;
/* allocate drawing area etc */
ami_cw->gg = ami_plot_ra_alloc(100, 100, false, true); // force tiles to save memory
ami_cw->deferred_rects = NewObjList();
ami_cw->deferred_rects_pool = ami_memory_itempool_create(sizeof(struct rect));
/* add the core window to our window list so we process events */
ami_gui_win_list_add(ami_cw, AMINS_COREWINDOW, &ami_cw_table);
/* set up the IDCMP hook for event processing (extended mouse, scrollbars) */
ami_cw->idcmp_hook.h_Entry = (void *)ami_cw_idcmp_hook;
ami_cw->idcmp_hook.h_Data = ami_cw;
/* open the window */
ami_cw->win = (struct Window *)RA_OpenWindow(ami_cw->objects[GID_CW_WIN]);
/* attach the scrollbars for event processing _if they are in the window border_ */
if(ami_cw->objects[GID_CW_HSCROLL] == NULL) {
GetAttr(WINDOW_HorizObject, ami_cw->objects[GID_CW_WIN],
(ULONG *)&ami_cw->objects[GID_CW_HSCROLL]);
RefreshSetGadgetAttrs((APTR)ami_cw->objects[GID_CW_HSCROLL], ami_cw->win, NULL,
GA_ID, GID_CW_HSCROLL,
ICA_TARGET, ICTARGET_IDCMP,
TAG_DONE);
ami_cw->in_border_scroll = true;
}
if(ami_cw->objects[GID_CW_VSCROLL] == NULL) {
GetAttr(WINDOW_VertObject, ami_cw->objects[GID_CW_WIN],
(ULONG *)&ami_cw->objects[GID_CW_VSCROLL]);
RefreshSetGadgetAttrs((APTR)ami_cw->objects[GID_CW_VSCROLL], ami_cw->win, NULL,
GA_ID, GID_CW_VSCROLL,
ICA_TARGET, ICTARGET_IDCMP,
TAG_DONE);
ami_cw->in_border_scroll = true;
}
return NSERROR_OK;
}
/* exported interface documented in example/corewindow.h */
nserror ami_corewindow_fini(struct ami_corewindow *ami_cw)
{
/* remove any pending redraws */
ami_schedule(-1, ami_cw_redraw_cb, ami_cw);
FreeObjList(ami_cw->deferred_rects);
ami_memory_itempool_delete(ami_cw->deferred_rects_pool);
/* destroy the window */
ami_cw->win = NULL;
DisposeObject(ami_cw->objects[GID_CW_WIN]);
#if 0
/* ensure our scrollbars are destroyed */
/* it appears these are disposed anyway,
* even if the gadgets are no longer attached to the window */
if(ami_cw->in_border_scroll == false) {
if(ami_cw->scroll_x_visible == false) {
DisposeObject(ami_cw->objects[GID_CW_HSCROLL]);
}
if(ami_cw->scroll_y_visible == false) {
DisposeObject(ami_cw->objects[GID_CW_VSCROLL]);
}
}
#endif
/* release off-screen bitmap stuff */
ami_plot_ra_free(ami_cw->gg);
/* free the window title */
ami_utf8_free(ami_cw->wintitle);
/* remove the core window from our window list */
ami_gui_win_list_remove(ami_cw);
return NSERROR_OK;
}
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